Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Fresh Cod-fish
Ingredients
Directions
Poach the cod
Place the cod in a kettle of cold water with coarse sea salt and a pinch of saltpetre, and cook thoroughly.
Fry and season
Coat the cod pieces in flour, sprinkle with cayenne pepper, and fry until brown.
Season with black pepper and salt, then add a little white wine and lemon juice, or a sauce made with butter and flour.
Serve
Serve with melted butter and your choice of sauce.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + white winetop 9% of all pairsSmell alikemoderateCooked together5,083 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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White wine + lemontop 11% of all pairsSmell alikemoderateCooked together3,832 recipes
Shared aroma: myrcene (balsamic, herbaceous).
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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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cod
- Is the main protein, turning flaky and firm as it cooks through.
- Flour
- Forms a coating that browns and crisps in the hot fat.
- Butter
- Adds richness and fat, carried into the serving sauce.
- White wine
- Adds acidity and aroma to the seasoning liquid.
- Lemon
- Adds bright acidity that balances the rich fried coating.
The step that matters
Frying the floured cod until brown. Flour browns quickly in hot fat, so the pieces can scorch before the fish is cooked through. Moderate heat lets the coating colour evenly while the flesh stays moist.
“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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