Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Fish-Broth a LA Duclair
Ingredients
Directions
Prepare the fish
Remove the skin from the pike and eel fillets.
Cut the fillets into slices and flatten the slices slightly.
Arrange the fillets in a buttered sauté pan and season them with salt, white pepper, and a pinch of red pepper.
Make the broth
Combine fish heads, bones, parings, salt, peppercorns, mace, onion, and parsley in a stewpan.
Moisten the stewpan with white wine, water, and white broth and boil the mixture.
Cover and cook for 1 hour.
Strain the broth and clarify it with egg whites, then strain the clarified broth through a wet napkin.
Finish and serve
Moisten the fillets with two ladlefuls of broth and boil and simmer the fillets for 10 minutes.
Place the fillets in a soup tureen with crusts of two buttered French rolls cut into small rounds.
Pour the boiling broth over the fillets and serve the 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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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White pepper + macetop 9% of all pairsSmell alikemoderateCooked together1,695 recipes
Shared aroma: myrcene (balsamic, herbaceous).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + white winetop 12% of all pairsSmell alikemoderateCooked together4,535 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
- Pike fillets
- Form the main body of the dish, becoming tender and flaky when gently simmered.
- Eel fillet
- Adds richness and a firmer texture to the fish pieces.
- Egg whites
- Trap particles as they set, clarifying the broth into a clear liquid.
- French rolls
- Soak up broth at the base of the tureen, giving a softer, absorbent texture.
- Butter
- Adds richness and keeps the fillets from sticking to the pan.
- White wine
- Adds acidity and aroma to the broth as it simmers with the fish trimmings.
The step that matters
Clarifying the broth with egg whites. Egg whites coagulate as they heat, trapping cloudy particles so they can be strained out. If the broth is stirred or boils hard while the whites set, the particles disperse and the broth stays cloudy.
Swap the white pepper
How well each one fits the dish's main ingredients (pepper, fish, mace, onion, parsley, white wine, egg):
- Thymefits better
- Marjoramfits better
- Tarragonfits better
- White pepperthe original
Fit is the average pairing score against pepper, fish, mace, onion, parsley, white wine, egg. 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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