Why it works: Clam and crab share more aroma than cooks usually use. They rank in the top 8% of all ingredient pairs, and cooks put them together in 17 recipes. Both carry 2,3,5-trimethylpyrazine, which smells cocoa, roasted. The science ↓
Fish Stock
Ingredients
Directions
Make the stock base
In a saucepan, melt the butter over medium heat.
Add the sliced onion and cook until browned.
Stir in the sliced tomatoes and assorted small fish, then cook together until the onions are well browned.
Add the sweet herbs, salt, pepper, and enough water to make the desired amount of stock.
Simmer and strain
Simmer for 30 minutes.
Pound the mixture with a wooden pestle.
Strain the stock and return it to the heat until it jellies.
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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Clam + crabtop 8% of all pairsSmell alikestrongCooked together17 recipes
Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).
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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Fish + oystertop 9% of all pairsSmell alikemoderateCooked together496 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + crabtop 10% of all pairsSmell alikemoderateCooked together812 recipes
Shared aroma: nonanal (fat, citrus).
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Oyster + crabtop 11% of all pairsSmell alikemoderateCooked together95 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweet butter
- Adds fat and rich flavour as the base for browning the onions.
- Onion
- Browns in the butter to add sweetness and depth of flavour to the stock.
- Tomatoes
- Add acidity and body, helping to balance the richness of the fish.
- Assorted small fish
- Provide the main seafood flavour and savoury body of the stock.
The step that matters
Cooking the onions until well browned. Browning the onions develops deep, savoury flavour through the Maillard reaction. Pale onions leave the stock tasting flat, while over-browned ones turn bitter.
Swap the tomato
How well each one fits the dish's main ingredients (butter, onion, fish, oyster, clam, smelt, crab):
- Potatofits better
- Horseradishfits better
- Capsicumfits about as well
- Tomatothe original
Fit is the average pairing score against butter, onion, fish, oyster, clam, smelt, crab. 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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