Why it works: Fish and lemon are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 1,889 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Fish Stock.
Ingredients
Directions
Prepare
Chop the fish bones and skin.
Make the stock
Combine the fish bones, lemon peel, onion, herbs, mace, cayenne, white peppercorns, salt, and cold water in a stewpan.
Bring to a boil, then skim well.
Simmer gently for several hours.
Strain through a fine sieve and set aside until needed.
When cold, remove every particle of fat.
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 + lemontop 15% of all pairsSmell alikelowCooked together1,889 recipes
Shared aroma: 2-nonenal (fatty, green).
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Mace + oniontop 17% of all pairsSmell alikelowCooked together7,078 recipes
Shared aroma: eugenol (clove, spicy).
-
Mace + lemontop 18% of all pairsSmell alikemoderateCooked together6,315 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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Fish + oniontop 19% of all pairsSmell alikelowCooked together1,924 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Lemon + oniontop 19% of all pairsSmell alikemoderateCooked together15,646 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
- Fish bones
- Provide the main body and gelatin that give the stock its flavor and body.
- Onion
- Adds sweetness and savory depth as it softens during the long simmer.
- Herbs
- Contribute aromatic flavor that infuses into the water during simmering.
The step that matters
Skim well after the boil. Skimming removes coagulated proteins and impurities that would otherwise cloud the stock and muddy its flavor.
Swap the mace
How well each one fits the dish's main ingredients (fish, lemon, onion):
- Parsleyfits better
- Thymefits better
- Capersfits better
- Macethe original
Fit is the average pairing score against fish, lemon, onion. 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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