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
Prepare the poaching liquid
Fill a pot with enough water for the fish to swim easily.
Add vinegar, salt, onion, black peppercorns, and mace.
Cook the fish
Sew the fish in a piece of clean net fitted to its shape.
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, mixed with 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
- Bass
- The main protein, which firms and turns opaque as it cooks in the simmering liquid.
- Drawn butter
- Adds richness and a silky mouthfeel that complements the mild, poached fish.
- Vinegar
- Adds a sharp acidity to the poaching liquid that brightens the flavour of the fish.
- Lemon juice
- Adds acidity to the butter sauce, balancing its richness.
The step that matters
Heat the pot slowly for the first 30 minutes. Gentle heating lets the fish cook evenly from edge to centre. Starting it in a fast boil can toughen the outside and leave the middle undercooked before the proteins set uniformly.
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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