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 Fish
Ingredients
Directions
Prepare
Sprinkle salt inside and outside the fish and let it stand overnight.
Cook and serve
Bring a pot of salted water to a boil.
Add the fish and boil for 15 to 20 minutes.
Transfer the fish to a platter and sprinkle with chopped parsley.
Serve immediately with hot potatoes boiled in salted water.
Make the parsley butter
Melt the butter without boiling it.
Pour the melted butter slowly into a serving dish, leaving the salt behind.
Add chopped parsley to the melted butter.
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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Parsley + buttertop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Fish + parsleytop 18% of all pairsSmell alikelowCooked together2,341 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mountain trout or white fish
- Provides the main body of the dish, cooked gently by boiling in salted water.
- Butter
- Adds richness and fat, carrying flavour when melted over the cooked fish.
- Parsley
- Adds fresh, herbal aroma and a bright green note to the fish and butter.
The step that matters
Melt the butter without boiling it. Butter is an emulsion of fat, water and milk solids. If it boils hard, the water separates and the milk solids can scorch, giving a greasy, burnt-tasting sauce. Melting it gently keeps it smooth.
Swap the parsley
How well each one fits the dish's main ingredients (fish, butter):
- Capersfits better
- Parsleythe original
- Tarragonfits about as well
- Nutmegfits less well
Fit is the average pairing score against fish, butter. 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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