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 ↓
To Boil Fresh Fish
Ingredients
Directions
Cook the fish
Clean and wash the fish well, then tie it up in a cloth.
Place the fish in a pot of boiling water with ½ tablespoon of salt.
Boil for 30 to 45 minutes.
Make the gravy
In a separate bowl, combine the chopped hard-boiled eggs, butter, mustard, pepper, fish eggs, and enough milk to create a gravy.
Boil the mixture.
Serve
Pour the gravy over the fish.
Remove the fish from the cloth.
Place the fish on a platter.
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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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Fish + milktop 13% of all pairsSmell alikemoderateCooked together1,432 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Egg + buttertop 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
- Fresh fish
- Provides the main protein, which firms and turns opaque as it cooks in boiling water.
- Butter
- Adds richness and moisture to the gravy, carrying flavour and giving it a smooth texture.
- Hard-boiled eggs
- Thicken the gravy and give it body as the chopped egg blends into the milk and butter.
- Milk
- Forms the liquid base of the gravy, softening the egg and butter into a creamy sauce.
- Mustard
- Adds sharp, pungent flavour that cuts the richness of the butter and egg.
The step that matters
Boil the mixture. Milk and egg proteins can scorch or curdle if overheated or left unstirred, which makes the gravy grainy. Keep it at a gentle boil while stirring so it thickens smoothly.
Swap the mustard
How well each one fits the dish's main ingredients (fish, egg, butter, pepper, milk):
- Potatofits better
- Capsicumfits better
- Asparagusfits better
- Mustardthe original
Fit is the average pairing score against fish, egg, butter, pepper, milk. 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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