Why it works: Lemon and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
How to Boil Fish
Ingredients
Directions
Prepare
Scale the fish before cooking.
Place the fish in a pot with cold water.
Add vinegar and horseradish to the water.
Cook and serve
Bring the water to a gentle boil.
Carefully drain the fish without breaking the skin.
Garnish with sliced lemon and serve with chopped parsley mixed in 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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Lemon + parsleytop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Horseradish + parsleytop 6% of all pairsSmell alikestrongCooked together562 recipes
Shared aroma: coumarin (sweet, hay).
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Horseradish + lemontop 9% of all pairsSmell alikestrongCooked together1,155 recipes
Shared aroma: coumarin (sweet, hay).
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Vinegar + horseradishtop 12% of all pairsSmell alikemoderateCooked together2,609 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Parsley + buttertop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Trout or salmon
- Its proteins set as it cooks, firming the flesh so it holds together.
- Horseradish
- Adds a sharp, pungent aroma that mellows as the fish cooks.
- Butter
- Adds richness and fat that carries flavor and keeps the fish moist.
The step that matters
Bring the water to a gentle boil. Vigorous boiling agitates the water and can break up delicate fish flesh and skin. A gentle simmer cooks the fish evenly while keeping it intact.
Swap the horseradish
How well each one fits the dish's main ingredients (salmon, vinegar, lemon, parsley, butter):
- Shallotfits better
- Chivefits better
- Cucumberfits better
- Horseradishthe original
Fit is the average pairing score against salmon, vinegar, lemon, parsley, butter. 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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