Why it works: Shallot and onion match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 2,431 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
A Fish Currie
Ingredients
Directions
Prepare
Soak the fish in salt for several hours, then cut it into pieces.
Cook
In a pot, combine the fish with enough water to cover it and add the curry powder.
In a skillet, melt the butter and fry the minced shallot and onions with pepper and salt until browned.
Add the browned mixture to the fish and stew everything together until the fish is tender.
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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Shallot + oniontop 8% of all pairsSmell alikestrongCooked together2,431 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Shallot + peppertop 11% of all pairsSmell alikemoderateCooked together5,898 recipes
Shared aroma: 2,4-decadienal (seaweed).
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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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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 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
- Cod, haddock, or mackerel
- Provides the main protein, which becomes tender and flaky during stewing.
- Butter
- Carries the aromatics and adds richness, helping onions brown in the skillet.
- Onions
- Soften and brown to build sweetness and depth in the sauce.
- Shallot
- Adds a mild, aromatic onion flavor that complements the onions.
- Curry powder
- Supplies the spice blend that flavors the stew liquid and fish.
The step that matters
Browning the onions and shallot. Frying the onions until browned drives the Maillard reaction and caramelization, creating sweet, deep flavor. Pale or steamed onions leave the curry tasting flat and raw.
Swap the shallot
How well each one fits the dish's main ingredients (fish, butter, onion, pepper):
- Potatofits better
- Capsicumfits better
- Chivefits better
- Shallotthe original
Fit is the average pairing score against fish, butter, onion, pepper. 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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