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 ↓
Boiled Bass
Ingredients
Directions
Poach the fish
Fill a pot with enough water for the fish to swim freely.
Add vinegar, salt, onion, black peppercorns, and mace.
Sew the fish in a piece of clean net, shaped to fit.
Heat the pot slowly for the first 30 minutes.
Boil the fish for at least 8 minutes per pound at a fast boil.
Serve
Unwrap the fish and pour over it drawn butter made from the boiling liquid, adding lemon juice.
Garnish with sliced lemon.
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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Vinegar + oniontop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Fish + lemontop 15% of all pairsSmell alikelowCooked together1,889 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fish
- The main protein, which cooks gently in the simmering liquid until it sets and turns opaque.
- Drawn butter
- Adds richness and a silky mouthfeel that complements the mild, poached fish.
- Vinegar
- Adds acidity that brightens the poaching liquid and the flavor of the finished fish.
- Lemon juice
- Adds acidity and freshness to the drawn butter, balancing its richness.
The step that matters
Boil the fish at a fast boil for the full time. Fish proteins set and turn opaque as they heat, and a gentle or interrupted boil can leave the flesh unevenly cooked. Holding the liquid at a fast boil for the stated time, based on weight, helps the fish cook through evenly.
Swap the mace
How well each one fits the dish's main ingredients (fish, vinegar, onion, butter, lemon):
- Tarragonfits better
- Parsleyfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against fish, vinegar, onion, butter, lemon. 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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