Why it works: Parsley and pepper 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 ↓
To Roast Eels
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Clean and skin the eels.
Curl the eels and dip them into melted butter.
Season and roast
Sprinkle with finely minced parsley, pepper, and coarse sea salt.
Fasten the eels with skewers and roast them quickly at 400°F (200°C).
Serve
Serve with fried parsley and a sauce made of melted butter and vinegar.
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 + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Parsley + vinegartop 16% of all pairsSmell alikemoderateCooked together6,477 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eels
- The main protein, which turns firm and flaky when cooked through.
- Melted butter
- Adds fat and richness, helping the surface brown and keeping the flesh moist.
- Vinegar
- Adds acidity to the butter sauce, balancing its richness.
- Finely minced parsley
- Adds fresh, green aroma and flavor to the eels.
The step that matters
Roast quickly at 400°F (200°C). High heat for a short time sets the flesh and browns the surface while the inside stays moist. Eel is lean and delicate, so overcooking dries it out and makes it tough.
Swap the parsley
How well each one fits the dish's main ingredients (butter, pepper, vinegar):
- Tarragonfits about as well
- Parsleythe original
- Thymefits less well
- Dillfits less well
Fit is the average pairing score against butter, pepper, vinegar. 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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