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 codfish
Soak codfish in cold water for 1 hour if too salty, otherwise wash in cold water.
Make the potato base
Place potatoes in a saucepan with codfish on top and pour boiling water over them.
Cook until potatoes are done, then mash them.
Season mashed potatoes with butter, milk, and pepper.
Form and fry
Let mixture cool, then add 2 beaten eggs and form into balls.
Roll balls in egg and cracker crumbs.
Fry balls in deep oil until golden 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 + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Mashed potatoes form the bulk of the balls, giving a soft, starchy body.
- Codfish
- Flaked fish adds savory flavor and the characteristic texture of the balls.
- Eggs
- Beaten eggs bind the mixture so the balls hold their shape.
- Butter
- Adds richness and moisture to the mashed potatoes.
- Cracker crumbs
- Form a crisp, browned outer coating when fried.
The step that matters
Let the mixture cool before adding the eggs and shaping. Hot mashed potato would scramble the beaten eggs and make the mixture too soft to hold its shape, so cooling lets the eggs bind it cleanly.
Swap the potato
How well each one fits the dish's main ingredients (butter, milk, pepper, egg):
- Capsicumfits about as well
- Potatothe original
- Asparagusfits about as well
- Chivefits less well
Fit is the average pairing score against butter, milk, pepper, egg. 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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