Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Codfish Balls
Ingredients
Directions
Prepare the fish
Prepare the codfish by washing and soaking it, then mince it finely.
Boil the minced fish in water for 20 minutes.
Drain the fish and cover with fresh boiling water; boil for another 20 minutes.
Drain the fish thoroughly and let it cool on a dish.
Shape the balls
Add an equal amount of mashed potatoes to the cooled fish.
Mix in a lump of butter, milk, and the beaten egg to form a stiff batter.
Flour your hands and shape the mixture into balls or cakes.
Fry and serve
Drop the balls into boiling lard or drippings and fry until light brown.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Codfish
- Provides the main flavor and bulk of the balls.
- Mashed potatoes
- Adds body and softness, helping the mixture hold together while staying tender.
- Egg
- Binds the mixture so the balls keep their shape.
- Butter
- Adds richness and moisture to the batter.
- Milk
- Adds moisture, loosening the batter to a workable stiffness.
- Flour
- Dusts the hands so the mixture can be shaped without sticking.
The step that matters
Drain the fish thoroughly and let it cool. Excess water makes the mixture loose and soggy, so the balls may not hold their shape or brown well in the hot fat.
Swap the potato
How well each one fits the dish's main ingredients (butter, milk, egg, flour):
- Chivefits about as well
- Potatothe original
- Leekfits about as well
- Asparagusfits about as well
Fit is the average pairing score against butter, milk, egg, flour. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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