Complete explanation of boilie ingredients: functions, science, and practical experience

Base flours (bulk and main ingredients)

Base flours make up the largest part of the mix and mainly provide carbohydrates (energy) and structure. They add volume and good rollability to the dough. Common base flours include grains (wheat, corn, rice), legumes, and nut flours. These ingredients are generally cheap, easy to process, and carp readily accept them as a food source. Below is an overview:

Wheat flour (white flour)

• Function: Basic carbohydrate; cheap bulk
• Nutritional values: ±11% protein, 70% carbohydrate, ~1% fat
• Science score: 7 – Good nutritional source
• Community score: 9 – Very popular (standard)
• Processability: Good
• Usage advice: ~30% max in mix
• Rolls excellently; carp love it (sweet bread taste)

Whole wheat flour

• Function: Basic carbohydrate + fiber
• Nutritional values: ±10% protein, 65% carbs, ~2% fat
• Science score: 7 – Nutrient-rich, fiber
• Community score: 8 – Popular (often present)
• Workability: Very good
• Recommended use: ~30% max
• Similar to wheat flour; slightly more fiber

Wheat semolina (grits)

• Function: Hardens boilie; structure
• Nutritional values: ±12% protein, 73% carbs, 2% fat
• Science score: 6 – Mainly energy
• Community score: 9 – Very popular (classic)
• Workability: Very good
• Usage advice: ~40% max
• Makes boilies super hard; excellent instant response

Cornmeal (polenta flour)

• Function: Basic carbohydrate; bulk and flavor
• Nutritional values: ±12% protein, 75% carbs, 4% fat
• Science score: 6 – Energy source
• Community score: 9 – Very popular
• Workability: Very good
• Usage advice: ~40% max
• Gives firm, sweet dough; spoils with long storage

Corn starch (cornflour)

• Function: Binder (stiffens); extra carbohydrates
• Nutritional values: 0% protein, ~85% carbs, 0% fat
• Science score: 5 – Pure energy (starch)
• Community score: 7 – Somewhat popular
• Workability: Very good
• Usage advice: ~20–25% max
• Overdosing makes boilie crumbly or overcooked

Rice (flour/semolina)

• Function: Binder, carbohydrate; lighter digestibility
• Nutritional values: ±8% protein, 78% carbs, ~1% fat
• Science score: 5 – Energy, low protein
• Community score: 7 – Accepted (sometimes used)
• Workability: Very good
• Recommended use: ~30–40% max
• Less hardening than wheat semolina

Buckwheat flour

• Function: Carbohydrate + minerals; alternative bulk
• Nutritional values: ~72% carbs, 2% fat, low protein
• Science score: 6 – Nutritious (rich in minerals)
• Community score: 6 – Less common
• Processability: Good
• Recommended use: ~30% max
• Low gluten: bakes poorly; gives good instant reaction

Rye meal

• Function: Basic carbohydrate, slightly more protein than wheat
• Nutritional values: ±10% protein, 55% carbs, 2% fat
• Science score: 7 – Nutrient-rich
• Community score: 6 – Limited popularity
• Workability: Very good
• Recommended use: ~30% max
• Slightly heavier and darker; not very popular (grey-brown color)

Rye flour (light)

• Function: Bulk with very good taste; easily digestible
• Nutritional values: ±8% protein, 73% carbs, 1% fat
• Science score: 6 – Energy source
• Community score: 7 – Fairly popular
• Processability: Good
• Recommended use: ~30% max
• Makes dough swell (harder to roll); good instant response

Soymeal (defatted, toasted)

• Function: Nutrition + binder; high protein & carbs, low fat
• Nutritional values: ~47% protein, 30% carbs, 1% fat
• Science score: 8 – High-quality protein
• Community score: 9 – Very popular
• Workability: Very good
• Recommended use: ~30–40% max
• Standard in almost every mix; spoils quickly.

Soymeal (full fat)

• Function: Nutrition + flavor; extra oils (energy)
• Nutritional values: ~40% protein, 25% carbs, 25% fat
• Science score: 7 – Good (essential fats)
• Community score: 8 – Popular (enthusiasts)
• Workability: Very good
• Recommended use: ~30–40% max
• Higher fat, lighter weight; limited shelf life (goes rancid)

Soybean meal (soy hulls)

• Function: Bulk fiber after oil extraction (cheap)
• Nutritional values: ±35% protein, 25% carbs, ~1% fat
• Science score: 6 – Moderate protein quality
• Community score: 5 – Rarely used
• Processability: Good
• Recommended use: ~30% max
• High fiber, lower nutritional value; little sold (old-fashioned)

Corn gluten meal

• Function: Plant protein (corn) as bulk and protein source
• Nutritional values: ~65% protein, 15% carbs, 5% fat
• Science score: 6 – Moderate amino profile
• Community score: 6 – Limited use
• Processability: Good
• Recommended use: ~10–15% max
• Hardens boilie very hard (rock solid); hardly binds itself

Wheat germ

• Function: Nutrition (protein+oil) + digestion aid
• Nutritional values: ±30% protein, 20% carbs, 11% fat
• Science score: 7 – Rich in vit. E and oil
• Community score: 7 – Popular in winter
• Processability: Good
• Recommended use: ~10–20% max
• Promotes digestion (fibers); good for winter bait (oil/vitamin)

Wheat bran

• Function: Fibers; lightens boilie (risk of floating if too much)
• Nutritional values: ±15% protein, 30% carbs, 6% fat
• Science score: 5 – Fibers (low nutrients)
• Community score: 4 – Rarely used
• Workability: Moderate/Difficult
• Usage advice: ≤20% max
• Hardens very poorly, too much makes boilie float

Baby cornmeal (BC Collant)

• Function: Toasted corn (sweet); binding and flavor
• Nutritional values: rich in carbs, low protein
• Science score: 6 – Energy and texture
• Community score: 8 – Popular (binding, sweet)
• Workability: Very good
• Usage advice: ~30–40% (can go up to 40%)
• Very sweet caramel flavor; hardening and price very favorable

Cookie meal (ground biscuit)

• Function: Sweet bulk, increases flavor attraction
• Nutritional values: ±7% protein, 70% carbs, 20% fat
• Science score: 5 – Sugars, low nutrients
• Community score: 8 – Popular (sweet mixes)
• Processability: Good
• Usage advice: ~20–30% max
• Hardens poorly (avoid overdosing)

Speculaas meal (ground)

• Function: Sweet, spiced bulk with sugars
• Nutritional values: ±7% protein, 70% carbs, 20% fat
• Science score: 5 – Sugars, aroma
• Community score: 7 – Niche (sweet spice bait)
• Processability: Good
• Usage advice: ~20–30% max
• Spiced biscuit (e.g. in winter bait); moderate binding, good instant reaction

Bread meal (white)

• Function: Very cheap bulk; improved rollability
• Nutritional values: ~10% protein, high carbs, low fat
• Science score: 5 – Fills mix, low nutrition
• Community score: 8 – Popular (filler)
• Workability: Very good
• Usage advice: ~20–25% max
• Rolls "like a train"; good instant response but dissolves quickly.

Bread meal (brown)

• Function: Bulk with more fiber (bran) than white bread meal
• Nutritional values: Lower protein/carbs vs white
• Science score: 4 – Fills but low nutrient content
• Community score: 6 – Less popular
• Workability: Poor
• Usage advice: ~20–25% max
• Hardly hardens (boilie softens quickly in water); cheap filler

Potato flake meal

• Function: Bulk, cost-saving; catch volume in cheap bait
• Nutritional values: ~5% protein, 70% carbs, ~0% fat
• Science score: 4 – Pure filler (low in nutrients)
• Community score: 5 – Unpopular (budget)
• Workability: Poor
• Recommended use: ~30% max
• Absorbs lots of water (can fix soft dough); outdated budget ingredient

Potato starch (potato)

• Function: Binder, starch source; hardens boilie
• Nutritional values: 0% protein, ~81% carbs, 0% fat
• Science score: 5 – Pure energy (starch)
• Community score: 6 – Occasionally used
• Processability: Fair
• Recommended use: ~10–20% max
• Similar to cornstarch; too much can dry or crack dough

Manioc meal (tapioca)

• Function: Very fine starch-rich meal; alternative bulk
• Nutritional values: ±32% protein, 60% carbs, 0% fat
• Science score: 6 – Moderate (protein partly cassava)
• Community score: 5 – Rarely used
• Processability: Good
• Usage advice: ~20% max
• Tapioca meal; nutritious but less digestible

Wheat flower

• Function: Very hard bulk (mix of cooked, dried meals)
• Nutritional values: ±10% protein, 30% carbs, ~0% fat
• Science score: 6 – Structure, low nutrients
• Community score: 6 – Known (UK heritage)
• Workability: Very good
• Recommended use: ~50% max
• Gives rock-hard boilies; outdated/not widely available

Sheep pellet (sheep grain)

• Function: Old bulk bait (mixed pellet); cheap volume meal
• Nutritional values: ±17% protein, 20% carbs, 4% fat
• Science score: 5 – Fairly nutritious
• Community score: 4 – Outdated (rarely used)
• Processability: Good
• Recommended use: ~30% max
• Outdated bait; quick scent release but short attraction

Explanation: Base meals largely determine the texture and nutritional base of the boilie. Grains like wheat and maize are almost always present due to their good rollability and carp acceptance. Too much pure starch (e.g. maize starch) can make the dough brittle, so stick to recommended max amounts. Older ingredients like sheep pellets and potato flour are less used nowadays and marked as outdated. Generally, a mix of different base meals gives better balance in nutrition and boilie properties.

Binders and hardeners

Binders mainly keep the dough cohesive and make the boilie hard enough after cooking/steaming. Usually ingredients with sticky proteins or starches that set during cooking. A good binder prevents boilies from falling apart when casting or in water, without ruining rollability too much. Key binders below:

Egg powder (whole egg, dried)

• Function: General binder (protein + yolk as binder)
• Nutritional values: ±45% protein, 40% carbs, 6–8% fat (rich in lecithin)
• Science score: 8 – Complete nutrition
• Community score: 9 – Very high (standard binder)
• Processability: Good
• Recommended use: ~5–10% (50–100 g/kg)
• Replaces fresh eggs; slightly less sticky than fresh egg but easy to work with. Excellent protein quality.

Egg albumin (egg albumin powder)

• Function: Powerful hardener (sets very hard)
• Nutritional values: ~80% protein, 0% carbs, 0% fat (pure protein)
• Science score: 9 – High (pure protein)
• Community score: 8 – Popular (for hookbaits)
• Workability: Medium/Good
• Usage advice: ~5% (50 g/kg) max
• Dried egg white; makes boilies rock hard when boiled. Too much gives tough/stiff dough. Often 5% in hard hookbait mixes.

Wheat gluten

• Function: Elasticity and binding; prevents crumbling
• Nutritional values: ~90% protein (gluten), 0% carbs/fat
• Science score: 7 – High protein but unbalanced
• Community score: 7 – Popular (often used)
• Workability: Good – very good
• Recommended use: ~10–15% max
• Keeps dough together; too much makes dough too elastic and unworkable.

Blood meal/plasma (blood powder)

• Function: Hardener; coagulates when heated, binds well
• Nutritional values: ~88% protein, 0% carbs, 2% fat
• Science score: 6 – Moderate (poor amino profile)
• Community score: 6 – Fair (little used)
• Processability: Good
• Usage advice: ~5–10% (up to 20% possible)
• Dried blood; gives very hard boilies and dark color. Strong smell, 'bleeds' in water (scent trail).

Milk powder (skimmed)

• Function: Binder and feed value; lactose sticks
• Nutritional values: ±35% protein, 50% carbs (lactose), ~1% fat
• Science score: 7 – Good (protein+sugar)
• Community score: 8 – Popular (often in mixes)
• Processability: Good
• Usage advice: ~20–30% max
• Improves flavor through milk sugars; too much can make dough sticky. Skimmed variant hardens better than full cream.

Milk powder (full cream)

• Function: Binder + fats for attraction; slightly less hard
• Nutritional values: ±30% protein, 40% carbs, 25% fat
• Science score: 7 – Good (energy+fat)
• Community score: 7 – Popular (in milk mixes)
• Workability: Poor (less hardening)
• Usage advice: ~20–30% max
• Rich creamy flavor, spoils faster due to fat. Softens boilies (use in freezebaits or mix with extra binder).

Lactalbumin (milk protein)

• Function: Very strong binder and high-quality protein
• Nutritional values: ~80% protein, 0% carbs, 0% fat
• Science score: 9 – Very high (top amino profile)
• Community score: 8 – Popular (quality mixes)
• Workability: Very good
• Usage advice: ~5–10% max (already hard at 5%)
• Excellent amino acid profile + hardens extremely. Very expensive; effective in small amounts.

Casein (acid casein, 90 mesh)

• Function: Hardener; main ingredient in milk protein baits
• Nutritional values: ~90% protein, 0% carbs, 0% fat
• Science score: 9 – Very high (complete protein)
• Community score: 7 – Popular
• Workability: Average
• Usage advice: ~10–20% max (100–200 g/kg)
• Milk protein with excellent amino profile; coarse casein gives harder boilie. Can make dough a bit stiff, recommended to combine with "softer" flours.

Whey powder

• Function: Promotes binding (milk sugar) + nutritional value
• Nutritional values: 30–75% protein (variable), rest lactose
• Science score: 7 – Medium (depends on % protein)
• Community score: 7 – Common (mixes with milk)
• Workability: Very good
• Usage advice: ~20% max
• Byproduct of cheese production; pairs well with grains. Higher protein variants (whey concentrate) better for fish.

Whey gel (whey protein concentrate)

• Function: Specific binder/hard protein from whey (WPC>75%)
• Nutritional values: ≥75% protein, <10% carbs, <5% fat
• Science score: 8 – High (rich in BCAA)
• Community score: 6 – Moderate (seldom used)
• Processability: Good
• Recommended use: ~5–10% max
• Special animal derivative that gels upon heating. Provides rubbery hardness, often in pop-up mixes. Relatively expensive.

Gelatine (collagen)

• Function: Binder when cooling (gel formation); pop-up mixes
• Nutritional values: ~90% protein (collagen), 0% carbs, 0% fat
• Science score: 5 – Low (not nutritious)
• Community score: 5 – Rarely used
• Processability: Difficult
• Recommended use: ~2–5% max
• Animal binder, makes dough tough and can provide buoyancy (air inclusion). Rarely used in modern boilies (better alternatives).

Explanation: Many binders are protein-rich (egg, gluten, milk) and thus also contribute nutritionally to the bait. Egg albumin and casein score high scientifically due to their pure protein and hardening effect; they are indispensable in hard hookbaits and high-protein bait. In practice, almost every self-maker uses fresh eggs as a binder (approx. 5–8 per kg mix), making egg powder unnecessary in the dough – fresh eggs provide excellent binding and hardening through protein coagulation. Overdosing binders can make the dough rubbery or hard to roll. Choose a combination: e.g., wheat gluten for elasticity, a milk protein (lactalbumin/casein) for hardness, and optionally egg albumin for extra firmness. This results in a firm but still pliable dough.

Protein sources (high-quality protein ingredients)

Protein sources provide essential amino acids for carp and increase the nutritional value (HNV – High Nutritional Value) of the boilie. They often also contribute to taste and attraction (e.g., fishmeal, crustacean meal). A good bait aims for ±20–50% protein in the mix. Below are the main protein-rich ingredients:

Fishmeal (standard whitefish)

• Function: Main protein; attraction through fish smell
• Nutritional values: ~65–70% protein, 6–10% fat, <10% ash
• Science score: 10 – Very high (complete fish diet)
• Community score: 10 – Very popular (basic)
• Processability: Average (slightly coarse)
• Recommended use: 20–50% (max ~50% in mix)
• Main ingredient in fish mixes; rich in essential amino acids. Promotes carp growth. High acceptance, but too much can reduce rollability.

Fishmeal LT (Low-temp)

• Function: High-quality digestible fishmeal (crusted)
• Nutritional values: 70–72% protein, ~10% fat (highly digestible)
• Science score: 10 – High (94% digestibility)
• Community score: 10 – Very popular (premium)
• Processability: Good
• Recommended use: 20–40% (more expensive, use 20–30%)
• Low-temperature dried retains more amino acids. Example: LT94. Slightly more expensive, but top results, especially in cold water.

Nutritional fishmeal (pre-digested)

• Function: Enzymatically hydrolyzed fishmeal; attractor
• Nutritional values: ~70% protein (partly soluble), <10% fat
• Science score: 10 – Very high (soluble amino acids)
• Community score: 9 – Popular (attraction package)
• Processability: Good
• Usage advice: ~5–20% (expensive, strong effect)
• Extremely attractive – up to 100% soluble protein. Strongly boosts instant attraction but costly; often used at ~10% for a boost.

Herring meal (fatty fish)

• Function: Fishmeal variant (high fat, highest protein)
• Nutritional values: ~75% protein, 13% fat
• Science score: 9 – Very good (rich in fats)
• Community score: 8 – Popular (fish mix)
• Processability: Good
• Usage advice: ~20% max
• Very nutritious, main ingredient in trout pellets. Strong smell, leaves oily trail (attractive).

Sardine/Anchovy meal

• Function: Fishmeal variant (sea fish, own aroma profile)
• Nutritional values: ~60–68% protein, ~10% fat
• Science score: 9 – Very good (omega-3)
• Community score: 8 – Popular (mix variation)
• Processability: Good
• Usage advice: ~20% max
• Fine orange meal from anchovies; combines well with other fishmeals. Produces lighter boilies.

Mackerel meal/Salmon meal

• Function: Fishmeal variant (high fat, strong smell)
• Nutritional values: ~70% protein, 12% fat
• Science score: 9 – Very good
• Community score: 7 – Common
• Processability: Fair
• Usage advice: ~20% max
• Sharp fishy smell, very oily. Instantly creates an oil film (attractive), but too much can make mix greasy.

Sand eel meal (sandeel)

• Function: Fishmeal variant (light color, well digestible)
• Nutritional values: ~70% protein, 10% fat
• Science score: 9 – Very good
• Community score: 7 – Known (specialist)
• Processability: Good
• Recommended use: ~10–20% max
• Light fishmeal; good protein quality. Often mixed with other fishmeals (10%+10%+10%) for broad profile.

Krill meal (shrimp meal)

• Function: Highly attractive shellfish meal (red-orange)
• Nutritional values: ~60% protein, 10–20% fat, rich in astaxanthin
• Science score: 9 – High (essential amino acids + astaxanthin)
• Community score: 10 – Very popular (attraction)
• Processability: Average (light, dry)
• Usage advice: ~5–15% (10% typical)
• Very strong aroma and flavor (krill). Partly dissolves and stimulates appetite. Orange-red color. Too much makes dough dry/brittle; oily.

Shrimp paste (Belachan)

• Function: Fermented shrimp block, powerful attractor
• Nutritional values: ~40% protein, 0% carbs, 1% fat (very salty)
• Science score: 8 – High (fermentation peptides)
• Community score: 9 – Popular (instant attraction)
• Processability: Difficult (moist)
• Usage advice: A few % (grate into mix)
• Strong smell (sour shrimp). Acts as a natural flavor enhancer. Practical: block form, can be grated or soaked; limited percentage due to salt content.

Insect meal (e.g., BSF)

• Function: Alternative protein (larvae etc.)
• Nutritional values: ~50–65% protein, 10–20% fat (depending on type)
• Science score: 8 – Promising (sustainable)
• Community score: 7 – Emerging (few suppliers)
• Processability: Good
• Recommended use: ~10–20% max
• Insect meal (e.g., black soldier fly). Good amino acid profile and digestibility. Sustainable alternative to fishmeal. Increasingly used.

Shellfish extract (GLM)

• Function: Green Lipped Mussel – highly attractive extract
• Nutritional values: ~60% protein, high free amino acids, <10% fat
• Science score: 9 – High (rich in BCAA, betaine)
• Community score: 9 – Very popular (pricey but effective)
• Processability: Good
• Recommended use: ~2–5% (often ~5% max)
• Premium attractor: contains natural betaine and fish attractors. Proven to improve bait uptake. Relatively expensive, so low dosage.

Blood meal (dried blood)

• Function: Very high protein (amino supplement)
• Nutritional values: ~88% protein, rest minerals
• Science score: 6 – Moderate (limited amino profile)
• Community score: 6 – Less popular
• Processability: Good
• Recommended use: ~5–15% max
• See Blood powder under binders. Mainly used as cheap protein source, but amino profile must be supplemented by other proteins.

Milk protein (casein/caseinate)

• Function: High-quality protein, hardness
• Nutritional values: ~90–95% protein
• Science score: 10 – Very high (complete profile)
• Community score: 8 – Popular (Honey Citrus)
• Processability: Good
• Recommended use: ~10–20% max
• See binders: Casein/Sodium caseinate. Essential in HNV boilies for amino balance. Very expensive, usually partly used alongside cheaper proteins.

Soy isolate (90% protein)

• Function: Plant protein concentrate (soy)
• Nutritional values: ~85% protein, ~0% carbs, ~0% fat
• Science score: 8 – High (plant-based EAA profile)
• Community score: 7 – Regular (fishmeal substitute)
• Processability: Good
• Recommended use: ~10–20% max
• Almost pure soy protein. Strongly increases protein content but does not harden and can cause boilies to swell when cooking. Use small amounts in hard mixes.

Wheat gluten meal (Super60)

• Function: Plant protein (wheat); protein supplement
• Nutritional values: ~75–80% protein, <10% carbs, <5% fat
• Science score: 6 – Moderate (incomplete gluten)
• Community score: 7 – Popular (alongside fishmeal)
• Workability: Very good
• Recommended use: ~10–20% max
• See binders: Wheat gluten. Provides lots of protein but amino profile lacks lysine. Often added for cheap protein % and better rollability.

Brewers yeast

• Function: Protein source + B vitamins, attractor
• Nutritional values: ~45% protein, <10% fat, rest fiber/ash
• Science score: 8 – High (rich in vitamins)
• Community score: 8 – Popular (health and taste)
• Processability: Good
• Recommended use: ~5–10% (50–100g)
• Rich in B vitamins and nucleotides; improves digestibility. Gives "umami" flavor; cannot overdose.

Corn gluten meal

• Function: See above under base meals – also protein source (65% prot)
• Nutritional values: ~65% protein, 15% carbs, 5% fat
• Science score: 6 – Moderate (low lysine)
• Community score: 6 – Limited (filler protein)
• Processability: Good
• Recommended use: ~10–15% max
• Plant-based byproduct; provides protein but with a limited amino acid profile. Mainly added for economic reasons.

Chick starter meal

• Function: Mixed feed meal (with e.g. corn, soy) for protein
• Nutritional values: ±21% protein, 26% carbs, 5% fat
• Science score: 6 – Fair (balanced feed)
• Community score: 7 – Popular in budget mixes
• Workability: Very good
• Recommended use: ~30–40% max
• Sweetish, resembles babycorn. Hardens well and cheap; mainly used in bulk for bait boilies.

Trout pellet (e.g. Trouvit)

• Function: Ready-made high-protein pellet (fish feed)
• Nutritional values: ~46–52% protein, ~20% carbs, ~8% fat
• Scientific score: 9 – High (complete fish diet)
• Community score: 8 – Popular (ground in mix)
• Workability: Very good
• Recommended use: ground: ~20–30% max
• Trout pellet: contains fishmeal, fish oil, and premixes. Mixed in, it strongly increases protein% and oil content. Usually added ground. Gives strong fish smell.

Explanation: Fishmeal ranks #1 as a protein source for carp – it is scientifically proven that carp grow on fish proteins and readily eat them. Higher-grade fishmeals (LT, predigested) score even better in digestibility and attraction. Plant proteins (soy, wheat gluten) can partly supplement fishmeal but cannot fully replace it because some essential amino acids are less represented. The highest scientific score is given to ingredients like fishmeal and casein, due to their complete amino profile and proven contribution to carp growth. In the carp community, fishmeals, krill, GLM, etc. are highly valued – they have produced countless big fish. Note the balance: too much protein (>50% in mix) can come at the expense of energy source and attraction; also, an excess of certain proteins can slow digestion in cold water. A mix of animal and plant proteins provides both nutritional value and practical rollability.

Liquid additives (liquids & oils)

Liquid additives increase bait attraction and can provide extra nutrients or soluble stimuli. They are usually used in relatively small amounts (ml per kg). Some key liquid additives:

Fish oil (salmon, herring oil)

• Function: Energy source, flavor enhancer; omega-3 fatty acids
• Nutritional values: 100% fat (rich in omega-3)
• Scientific score: 7 – Nutritious (essential fats)
• Community score: 8 – Popular (always in bait)
• Workability: Good (makes dough smooth)
• Recommended use: ~5–10% of liquid (20–30 ml/kg)
• Improves rollability and scent leakage. Too much oil can make bait less attractive in cold water (oil solidifies).

Hemp oil (and other seed oils)

• Function: Aroma and oil coating; omega 6 fats
• Nutritional values: 100% fat (omega 6, vitamin E)
• Scientific score: 6 – Nutritious (energy-rich)
• Community score: 8 – Popular (for scent trail)
• Workability: Good (emulsifies in cold water)
• Recommended use: ~10–20 ml/kg
• Nutty flavor. Stimulates appetite, especially in warm water. Hemp oil highly favored in the community for summer and autumn boilies.

Cod liver oil/Liver liquid

• Function: Liquid liver extract; attractor + protein
• Nutritional values: ~50% protein (peptides), rest water and fat
• Scientific score: 9 – High (rich in free amino acids)
• Community score: 8 – Popular (classic)
• Workability: Moderate (sticky)
• Recommended use: ~20–50 ml/kg (depending on concentration)
• Highly bait-stimulating; contains free amino acids from liver. Known as liquid liver. Gives strong umami flavour to bait.

Corn Steep Liquor (CSL)

• Function: Fermented corn extract; fermentation attractor
• Nutritional values: ~20% protein, many vitamins (B), sugars
• Science score: 8 – High (soluble attractors)
• Community score: 9 – Very popular (instant effects)
• Processability: Good
• Recommended use: 30–50 ml/kg (or more for soak)
• Known liquid: cloudy brown liquid full of lactic acid bacteria extracts. Carp respond immediately (sour, fermenting aroma). Especially effective in colder water.

Amino liquid (Minamino etc.)

• Function: Amino acid solution; stimulates appetite
• Nutritional values: ~30% protein (free amino acids), added vitamins/minerals
• Science score: 9 – High (well-founded bait trigger)
• Community score: 8 – Popular (for dips and soak)
• Processability: Good
• Recommended use: 20–40 ml/kg
• Pharmaceutical mix of amino acids (originally for veterinary use). Proven to improve feed intake. Often used to soak boilies for extra attraction.

Molasses (sugarcane syrup)

• Function: Sweetener and nutrient source; thick syrup
• Nutritional values: ~50–60% sugars, minerals (K, Ca)
• Science score: 7 – Medium (energy)
• Community score: 7 – Popular (particles, feeder)
• Processability: Difficult (sticky)
• Recommended use: 20–30 ml/kg (or 5–10% in mix)
• Very sweet, heavy syrup byproduct of sugar. Attracts fish through soluble sugars. Limited use in boilies (too much softens dough), more often in particles/groundbait.

Liquid Krill/Shad

• Function: Liquid crustacean extract; attractor
• Nutritional values: ~20–30% protein (peptides), high salt
• Science score: 8 – High (stimulates receptors)
• Community score: 8 – Popular (fishy liquids)
• Processability: Moderate (thick, salty)
• Recommended use: ~20 ml/kg
• Strong-smelling liquid from Krill or small fish. Provides soluble stimuli where powder meal does less. Watch salt content (can act as preservative).

Sweet dips (Scopex liquid, etc.)

• Function: Sweet flavouring + soluble attractor
• Nutritional values: Varies – often PG or glycerine based, little nutrient
• Science score: 5 – Low (taste, no nutrition)
• Community score: 9 – Very popular (flavour/dip)
• Processability: Good
• Recommended use: 5–10 ml/kg (depending on concentration)
• Liquid flavours based on sugar/glycerol (e.g., Scopex, maple, strawberry). Easily mixed into egg mix. No nutritional value, purely for taste and smell.

Emulsifier (e.g., lecithin)

• Function: Additive – makes oil water-soluble
• Nutritional values: ~100% phospholipid (fat)
• Science score: 7 – Medium (aids fat digestion)
• Community score: 7 – Known (advanced mixes)
• Recommended use: ~5 g/kg (if oil >20 ml)
• Ensures oils release better in cold water (emulsifies). Often mentioned when using a lot of oil in bait to remain effective in winter.

Explanation: Liquids add soluble attractants that leak immediately from the boilie after casting. Especially CSL (Corn Steep Liquor) is known for its instant effect – rich in amino acids and vitamins from fermentation. Scientifically, fermented and hydrolysate liquids score high because they contain substances proven as feeding triggers in studies (e.g., free amino acids and betaine). The community values practical results: liquids like CSL, Minamino, and liver extract have been popular for decades due to their catch power. Oils contribute to the scent trail and provide essential fatty acids; note that overdosing oil in winter is less effective because oil disperses less in cold water. A bit of lecithin (from egg yolk or soybean) can improve this. Liquid additives are usually added to the egg mix or used afterward as a soak/dip for extra surface flavor.

Sweeteners

Sweeteners make bait more attractive by an intense sweet taste. Carp have taste receptors for sweet, and although sugars themselves are limited digestible for fish, sweeteners can indeed promote bait uptake. There are natural sugars and artificial intense sweeteners:

White sugar (sucrose)

• Function: Sweetener; energy source (limited digestibility)
• Nutritional values: 100% carbohydrate (sugar)
• Science score: 5 – Low (no essential nutrients)
• Community score: 8 – Popular (cheap, household staple)
• Processability: Good
• Recommended use: ≤10–15% max
• Very sweet; carp love sugar. Too much weakens binding and boilie firmness. Often replaced by carp-specific sweeteners.

Molasses powder (or syrup)

• Function: Natural sweetener + aroma
• Nutritional values: ~40% sugar, minerals (K, Ca)
• Science score: 6 – Medium (energy + minerals)
• Community score: 7 – Fairly known
• Processability: Good (powder; syrup harder)
• Recommended use: ~5–10% in mix (powder); 20 ml (syrup)
• See Molasses in liquids. Powder form is easy to process. Gives dark color and caramel aroma.

NHDC (Neohesperidine DC)

• Function: Intense artificial sweetener (bitter orange extract)
• Nutritional values: ~0% nutrients (flavor only)
• Science score: 4 – Very low (no nutritional value)
• Community score: 8 – Popular (standard sweetener)
• Recommended use: ~1–2 g per kg (highly concentrated)
• Very powerful sweetener (~1800x sweeter than sugar). Provides long-lasting sweet taste. Standard in many ready-made baits. Overdosing can make bait bitter.

Talin (Thaumatine-B)

• Function: Intense natural sweetener (katemfe fruit)
• Nutritional values: ~0% nutrient (protein sweetener)
• Science score: 5 – Low (no nutrition, but binds to taste receptors)
• Community score: 8 – Popular (alternative to NHDC)
• Recommended use: ~1 g per kg
• Natural protein from African fruit, extremely sweet (±2000x sugar). Provides a "round" sweetness without bitter aftertaste. Considered a premium sweetener.

Saccharin (Na-saccharin)

• Function: Classic artificial sweetener
• Nutritional values: 0% nutrient
• Scientific score: 3 – Very low
• Community score: 6 – Less popular (outdated)
• Recommended use: ~0.5–1 g/kg
• Used to be standard but has a bitter aftertaste at higher doses. Nowadays replaced by more modern sweeteners (NHDC, Talin).

Fructose (fruit sugar)

• Function: Natural sugar; slightly better soluble than sucrose
• Nutritional values: 100% carbs (monosaccharide)
• Science score: 5 – Low (energy source)
• Community score: 7 – Occasionally used
• Processability: Good
• Recommended use: ~5–10% in mix
• Slightly sweeter than regular sugar and better soluble in cold water. Too much makes dough sticky. Can be used in birdfood or nut mixes for extra flavour.

Salt (NaCl)*

• Also used as a preservative
• Salt also works as a flavour enhancer: in low doses (1–2%) salt can make bait more attractive; carp can taste saltiness. However, it is primarily a preservative, see there.

Explanation: "Carp have no teeth, but they do have a sweet tooth" – this playful saying indicates that carp notice and appreciate sweet tastes. Scientifically, sweeteners add little nutritional value, hence the low score. Yet practical tests and anecdotes show that adding intense sweeteners can sometimes speed up bait uptake, especially with baits containing bitter or strong extracts (the sweetener masks negative tastes). In carp fishing, NHDC has long been the standard sweetener due to its stability when boiling and long-lasting effect. Talin is gaining popularity as a more natural option with very strong sweetness. Don’t overdo it: a few grams are enough – fish can detect extreme sweetness, but an overly unnatural taste can cause suspicion. Often a combination of sweetener and flavour is used for a balanced bait profile.

Flavours (aromas)

Flavours are concentrated scent and taste compounds that give bait an attractive aroma. They have no nutritional value themselves but stimulate the carp’s sense of smell and taste. Flavours come in countless varieties – from fruity to fishy – and can be synthetic or natural (essential oils). Some categories and examples:

Fruit flavours (e.g. Strawberry, Pineapple, Banana, Tutti Frutti)

• Function: Sweet, recognizable scent that releases quickly
• Nutritional values: 0% (chemical aroma in PG/alcohol)
• Science score: 3 – Very low (no effect on nutrition)
• Community score: 9 – Very popular (instant attraction)
• Workability: Good (add to mix with egg)
• Recommended use: ~5–10 ml per kg (depending on concentration)
• Instant attractors for short sessions. Fruity aromas (pineapple with butyric acid is a classic) work well in cold water due to good solubility.

Creamy flavours (e.g. Scopex, Vanilla, Caramel)

• Function: Sweet cream/butter scent, often esters
• Nutritional values: 0%
• Scientific score: 3 – Very low
• Community score: 9 – Very popular
• Processability: Good
• Usage advice: ~5–10 ml/kg
• Scopex is one of the most renowned: a butter-vanilla aroma that has attracted many large carp. Creamy flavours blend well with milk- and birdfood mixes.

Fish/Crustacean flavours (e.g. Crab, Squid-Octopus)

• Function: Savoury, strong scent; imitates natural prey
• Nutritional values: 0%
• Scientific score: 3 – Very low
• Community score: 8 – Popular (mainly in fish bait)
• Processability: Good
• Usage advice: ~5–10 ml/kg (strong, follow dosage)
• Give bait a stink that carp find attractive. Often used with fishmeal. Don’t overdose – too strong can raise suspicion.

Spice flavours (e.g. Monster Crab, Indian spice)

• Function: Spicy scent, often a combination of esters
• Nutritional values: 0%
• Scientific score: 3 – Very low
• Community score: 7 – Moderately popular
• Processability: Good
• Usage advice: ~5–10 ml/kg
• Fiery, spicy aromas. Often used in winter. Robin Red-style boilies are also often boosted with spice flavour.

Essential oils (e.g. Black pepper oil, Garlic oil)

• Function: Highly concentrated natural oil scent
• Nutritional values: 0% (but in oil)
• Scientific score: 5 – Medium (some effect on behavior)
• Community score: 8 – Popular (distinctive)
• Processability: Good (but hard to mix, very little needed)
• Usage advice: ~1–3 drops per kg (very little!)
• Pure herbal oil. For example black pepper oil: commonly used winter edge (0.5–1 ml on 6 eggs). Essential oils spread well but avoid overdosing.

Other aromas (e.g. Scopex-nut, Maple, Scopex-Squid combo)

• Function: Specific brand scents or combos
• Nutritional values: 0%
• Scientific score: 3 – Low
• Community score: 8 – Popular
• Processability: Good
• Usage advice: According to supplier (usually 5–8 ml/kg)
• Manufacturers offer unique blends. Community score depends on hype and catches; some have cult status.

Explanation: Flavours score low scientifically because they mainly target carp behavior rather than nutrition – a carp can do fine without strawberry or crab scent. However, there are indications that some flavour components (esters, aldehydes) are detected by carp from a long distance and spark curiosity. The community uses flavours massively: almost every homemade boilie has some aroma. Dosage is crucial: more is not necessarily better. Often a lower dosage works more subtly and catches better in the long run, while an overdose can raise suspicion after initial curiosity. Essential oils get a slightly higher scientific score because they are natural and in some tests (like garlic oil) showed effects on appetite or parasites – but they are used in such tiny doses that it’s mainly about scent. In short: choose a flavour that fits your mix (fruit with birdfood, fish with fish mix, etc.), stick to recommended amounts, and remember that confidence in your bait might be the most important factor – the flavour that gives you confidence will keep you fishing longer in one spot and thus increase your chances of catching.

Herbs & Spices

Herbs and spices are natural additives that provide both flavor and sometimes a stimulating effect. They can give bait a recognizable "real food" character. Some spices also contain essential oils or capsaicin that stimulate metabolism. Examples include:

Garlic powder

• Function: Strong natural scent; masks unwanted odors, antibacterial
• Nutritional values: ~18% protein, rest carbs and sulfur compounds
• Scientific rating: 7 – Medium (some effect on gut health)
• Community rating: 9 – Very popular (classic attractor)
• Processability: Good
• Recommended use: ~1–2% (10–20 g/kg)
• Spicy smelling. Carp react to allicin scent. Traditional ingredient in many baits (garlic boilies). Can overpower bait – small amount suffices.

Chili powder (cayenne)

• Function: Spiciness; possible stimulant effect from capsaicin
• Nutritional values: ~15% protein, 15% fat, high fiber; capsaicin oil
• Scientific rating: 6 – Medium (capsaicin effect little studied in fish)
• Community rating: 8 – Popular (especially winter)
• Processability: Good
• Recommended use: ~0.5–1% (5–10 g/kg)
• Hot spicy: believed to stimulate metabolism and make bait stand out. Many winter mixes contain a pinch of chili.

Paprika powder (sweet or hot)

• Function: Color and mild spicy aroma
• Nutritional values: ~9% protein, 13% fat (high carotenoids)
• Scientific rating: 6 – Medium (colorants, antioxidants)
• Community rating: 7 – Common (with Robin Red)
• Processability: Good
• Recommended use: ~2–5% in mix
• Gives a nice red/orange color through carotenoids (like Robin Red). Mild flavor, can be used in larger amounts for color.

Black pepper (oil or powder)

• Function: Subtle stimulant; essential oil stimulates senses
• Nutritional values: (oil) 0% nutrients
• Scientific rating: 5 – Low (stimulating, no nutrition)
• Community rating: 8 – Popular (known catches)
• Processability: Good
• Recommended use: Oil: ~1–2 drops/kg; Powder: ~5 g/kg
• Black Pepper Oil has cult status (Terry Hearn's winter edge). Science is thin, but anglers swear by it.

Salt (NaCl)

• Function: Flavor enhancer; preservative at high doses
• Nutritional values: 0% protein, 0% carbs, 0% fat (but ~39% Na, 61% Cl minerals)
• Scientific rating: 7 – Medium (essential mineral in small amounts)
• Community rating: 9 – Very popular (a pinch in every bait)
• Processability: Good
• Recommended use: ~1–2% (10–20 g/kg)
• Essential trace element: a pinch of salt in bait can make it more attractive. Carp naturally seek out salts/minerals. Too much salt (>2%) can dry out bait. Usually around 1% is used.

Robin Red (Haith's herb mix)

• Function: Spicy red birdfood with paprika and pepper
• Nutritional values: ~16% protein, 44% carbs, 8% fat
• Science rating: 7 – Medium (contains vitamins, carotenoids)
• Community rating: 10 – Very popular (legendary bait ingredient)
• Processability: Good
• Recommended use: ~5–10% (max 10–20% depending on mix)
• Famous mix: contains cayenne, paprika, oils, and red dye. Gives red color and spicy taste. Carp eagerly feed on it; considered by many as the secret key in many successful boilies.

Note: Spicy additives are often associated with winter bait – believed to "warm up" the carp or at least stimulate them in cold water where sweet/fruity might be less noticeable. Although hard data is limited, herbs contain bioactive compounds: garlic has allicin which can act antiparasitic in fish, and studies show garlic extract can increase feed intake in aquaculture. Chili (capsaicin) does not cause heat sensation in fish like in humans, but it can slightly increase blood flow. Community-wise herbs are very popular – think of the famous Robin Red boilies that have produced catches for decades. The scientific rating is moderate because many effects are anecdotal. Still, herbs are a relatively safe addition: natural, hard to overdose (except extremely hot peppers), and they can give bait that distinctive profile. Many top catches have been made with a pinch of herbs in the mix!

Preservatives

Preservatives ensure boilies last longer outside the freezer by inhibiting mold and bacterial growth. For "shelf life" boilies these are essential ingredients. They have no direct attraction effect (sometimes a slight off-flavor), so dosing is kept minimal – enough to preserve, but no more than necessary.

Salt (NaCl)

• Function: Preservative (removes moisture) + flavor enhancer
• Nutritional values: mineral, 0% carbs/fat/protein
• Science rating: 8 – High (effective against spoilage)
• Community rating: 10 – Very popular (everyone uses salt)
• Processability: Good
• Recommended use: ~1–2% in mix (10–20 g/kg)
• At ≥1% salt inhibits mold growth. Too much makes bait unattractive and hard. Usually 1% suffices. Also improves carp acceptance of taste.

Potassium sorbate (E202)

• Function: Fungistatic (mold inhibitor)
• Nutritional values: additive, no nutrition
• Science rating: 9 – High (very effective, safe)
• Community rating: 8 – Popular (standard shelf-life)
• Processability: Good
• Recommended use: ~0.2% in mix (2 g per kg) dissolved in egg
• Standard preservative for shelf-life boilies. Tasteless at low doses. Dissolve in egg mix for even distribution.

Nipagin/Nipasol (methyl-/propylparaben)

• Function: Broad-spectrum preservative (fungi + bacteria)
• Science rating: 9 – High (powerful, broad-spectrum)
• Community score: 7 – Common (ready-made bait)
• Processability: Good
• Recommended use: ~0.1–0.2% (1–2 g/kg) combined (nipagin + nipasol)
• Paraben mix used in many commercial baits. Extremely effective but hard to obtain for home use. Potassium sorbate preferred due to availability.

BZ/BA mix (Benzoic acid/Sodium benzoate)

• Function: Preservation (acidic environment inhibits microbes)
• Scientific score: 8 – High (effective at pH < 4.5)
• Community score: 6 – Less popular (alternative)
• Processability: Good
• Recommended use: ~0.1–0.3% (requires acidic environment)
• Benzoic acid works mainly in acidic bait (e.g., with lots of CSL or acidic fruit flavour). Sometimes used in combination with sorbic acid.

Glycerol (glycerine)

• Function: Natural preservative at high dosage (moisture binder)
• Nutritional values: 100% polyol (sugar alcohol)
• Scientific score: 7 – Medium (hygroscopic)
• Community score: 7 – Occasionally used
• Processability: Moderate (makes dough sticky)
• Recommended use: ~5–10% of mix (as liquid in eggs)
• Keeps boilies moist but binds water so microorganisms cannot grow. Sometimes used in hookbaits for soft, durable results. Can make boilies sweaty.

Explanation: For homemade freezerbaits, usually salt alone suffices as a preservative – a bit of salt in the mix and thorough drying prevents rapid mold growth. Scientifically, potassium sorbate is very well supported: it is safe for carp at low doses and effectively inhibits mold growth. Most commercial shelf-life boilies contain a combination of sorbates and parabens; these score high on effectiveness but slightly lower in the community because some anglers believe fish can "taste" them (although at correct doses this is negligible). For the community, salt remains king – it is widely used and seen as natural (carp naturally encounter salt). Note: preservatives do not replace proper drying and storage procedures. Homemade boilies must be well dried and stored in breathable bags. For longer shelf life, freezing or use of the mentioned preservatives is necessary. Use the minimal effective amount to keep the bait as attractive as possible.

Conclusion: The above information provides a comprehensive reference for nearly all boilie ingredients, from classic base meals to modern attractors. For each ingredient, it is indicated what it is used for, its contribution (or lack thereof) to nutrition, how it is rated in studies and among carp anglers, how easy it is to process, how to dose it, and any special notes. This allows both novice and experienced boilie makers to create a balanced mix with a well-thought-out combination of ingredients. Good luck crafting quality bait!