Why it works: Fish and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 4,488 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Loiled White Fish
Ingredients
Directions
Prepare
Dress the fish nicely.
Poach the fish
Cover the fish in a fish kettle with boiling water seasoned with coarse sea salt.
Remove the scum as it rises and simmer for 8 to 10 minutes per pound.
When about half done, add vinegar or lemon juice.
Serve
Take out the fish, drain it, and dish it carefully.
Pour drawn butter over the fish or garnish with parsley and serve with egg sauce.
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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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + saucetop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Vinegar + parsleytop 16% of all pairsSmell alikemoderateCooked together6,477 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Butter and sauce barely smell alike, yet cooks put them together in 15,338 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
- White fish
- Provides the main protein, which firms and turns opaque as it poaches.
- Vinegar or lemon juice
- Adds acidity that brightens the flavour of the mild fish.
- Drawn butter
- Adds richness and a silky mouthfeel to the mild, lean fish.
The step that matters
Simmer, don't boil, after adding the fish. Vigorous boiling breaks up the delicate flakes and toughens the protein, so the fish looks ragged and dries out. Keeping the water at a gentle simmer cooks it evenly while the flesh stays moist and intact.
Swap the parsley
How well each one fits the dish's main ingredients (fish, vinegar, butter, egg, sauce):
- Capersfits better
- Tarragonfits better
- Parsleythe original
- Nutmegfits less well
Fit is the average pairing score against fish, vinegar, butter, egg, sauce. 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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