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 ↓
Salt Cod
Ingredients
Directions
Prepare the fish
Pick the salt cod into small pieces, removing all bones.
Soak the fish overnight, then drain and mix with an equal quantity of finely mashed potatoes, a lump of butter, and pepper.
Cook and serve
Form the mixture into cakes or balls, lightly flour them, and fry until brown.
Alternatively, boil the soaked fish in fresh water for about 30 minutes. Drain the water, then stir in 1 cup of sweet milk or cream mixed with the yolks of 2 eggs, a lump of butter, a little pepper, and a sprinkle of flour.
Stir for a few minutes until well mixed for an excellent breakfast dish.
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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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).
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
- Salt cod
- Provides the main savoury flavour and the flaky body of the cakes.
- Potatoes
- Mashed starch binds the fish and adds softness and moisture to the cakes.
- Butter
- Adds richness and fat, carrying flavour and helping the cakes brown.
- Flour
- Light coating helps the outside of the cakes brown and crisp when fried.
- Egg yolks
- Enrich the milk mixture, adding richness and helping it set and bind.
The step that matters
Soaking the salt cod. Salt cod must be soaked long enough to remove excess salt and rehydrate the fish. Under-soaking leaves the cakes too salty and tough, while the fish still needs thorough draining so the mixture holds its shape.
Swap the potato
How well each one fits the dish's main ingredients (butter, pepper, flour, milk, egg):
- Capsicumfits about as well
- Potatothe original
- Asparagusfits about as well
- Chivefits about as well
Fit is the average pairing score against butter, pepper, flour, milk, 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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