Why it works: Parsley and lemon 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 ↓
Head and Shoulders with a White Sauce
Ingredients
Directions
Prepare the fish
Boil onions and parsley in 3 pints of water until flavor is extracted.
Remove gills from fish and wash head and shoulders in cold water.
Pour boiling water over one side of fish and quickly remove black slime without breaking skin, then repeat on the other side.
Boil enough water to cover fish, adding ½ cup vinegar and a handful of coarse sea salt.
Dry fish before placing it in water.
Cook and glaze the fish
Place fish on drainer, set it in boiling water, and cook for 30 minutes.
Remove fish and glaze it with 2 egg yolks.
Sprinkle with bread crumbs, minced parsley, pepper, salt, and lemon zest.
Dot fish with bits of ½ pound butter and place it before a fire to baste until bread is crisp and parsley is green.
Make the sauce and serve
Strain stock and thicken it with butter kneaded with flour.
Add ½ cup white wine, oysters with their liquor, lemon juice, white pepper, and lobster meat.
Boil sauce for a few minutes.
Pour some around fish and serve the rest in a separate dish.
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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Parsley + lemontop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Fish head and shoulders
- Provides the main body of the dish, cooked gently in simmering water to stay moist.
- Egg yolks
- Form a glaze on the fish that helps the crumbs brown and bind.
- Butter
- Adds richness and moisture, and helps the crumb coating crisp and brown while basting.
- White wine
- Adds acidity and aroma to the sauce, balancing its richness.
- Oysters
- Add briny flavor and a soft, silky texture to the sauce.
- Lobster meat
- Adds sweet, delicate flavor and texture to the sauce.
The step that matters
Dry fish before placing it in water. A dry surface lets the fish settle into the simmering liquid without sudden temperature shock or breaking the skin, and keeps the poaching liquid from being diluted before the fish is set in it.
Swap the onion
How well each one fits the dish's main ingredients (fish, parsley, vinegar, egg, pepper, lemon, butter):
- Shallotfits better
- Capsicumfits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against fish, parsley, vinegar, egg, pepper, lemon, 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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