Why it works: Horseradish and lemon match in chemistry and in kitchens. They rank in the top 9% of all ingredient pairs, and cooks put them together in 1,155 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Cod, Head and Shoulders of
Ingredients
Directions
Prepare
Wash the fish thoroughly and rub a little salt inside.
Bind tape around the cheeks to prevent breaking.
If crimped, plunge into hot water; otherwise, pour cold water gently over the fish.
Use 1 tablespoon of salt for every 3 quarts of water.
Poach
Once the water boils, remove scum and let the fish simmer gently until ready.
When the flesh parts easily from the bone, the fish is ready.
Serve
Drain well and serve on a hot napkin with roe and liver cooked separately.
Garnish with horseradish and sliced lemon.
Serve with oyster or anchovy sauce and 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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Horseradish + lemontop 9% of all pairsSmell alikestrongCooked together1,155 recipes
Shared aroma: coumarin (sweet, hay).
-
Oyster + buttertop 12% of all pairsSmell alikemoderateCooked together8,184 recipes
Shared aroma: 2,6-nonadienal (cucumber, green).
-
Horseradish + oystertop 13% of all pairsSmell alikemoderateCooked together282 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
-
Lemon + buttertop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Lemon + oystertop 26% of all pairsSmell alikemoderateCooked together2,942 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cod
- Forms the main body of the dish; its flesh firms and flakes as it cooks.
- Horseradish
- Adds a sharp, pungent heat that contrasts with the rich, mild fish.
- Butter
- Adds richness and a smooth, fatty mouthfeel to the served fish.
- Oyster or anchovy sauce
- Adds salty, savory depth that complements the mild flavor of the cod.
The step that matters
Simmering the fish gently. Once the water boils, a gentle simmer keeps the flesh tender and intact. A rolling boil toughens proteins and can break the fish apart, so the fish should cook at a low, steady heat until the flesh parts easily from the bone.
“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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