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 ↓
Eels Stewed a L'americain
Ingredients
Directions
Prepare
Cut the eels into pieces about 2 inches long.
Season the eels with pepper and salt.
Cook
Melt the butter in a saucepan and add the eels.
Strew the chopped onion and parsley over the eels.
Cover the saucepan tightly and place it in a pot of cold water.
Gradually bring the water to a boil and cook gently for 1.5 hours, or until the eels are tender.
Serve in a deep 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.
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + parsleytop 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
- Eels
- Provide the main protein, which becomes tender and flaky through gentle, prolonged cooking.
- Butter
- Adds richness and fat, carrying flavour and giving the eels a silky mouthfeel.
- Young onion
- Adds aromatic sharpness that mellows and sweetens gently during slow cooking.
The step that matters
Gradually bring the water to a boil and cook gently. Heating slowly in a covered saucepan set in water keeps the eel's protein from tightening and drying out. A hard boil would toughen the flesh and break it apart, so the gentle, covered heat is what makes the eels tender.
Swap the onion
How well each one fits the dish's main ingredients (butter, pepper, parsley):
- Carrotfits better
- Shallotfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against butter, pepper, parsley. 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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