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 ↓
Stewed Eels
Ingredients
Directions
Prepare
Preheat the oven to 300°F (150°C).
In a bowl, mix the eel pieces with salt, pepper, parsley, flour, sweet herbs, and chopped onion.
Place the mixture in a paper bag with the milk, water, or stock.
Bake and serve
Seal the bag and place it on the grid in the oven.
Cook for 20 minutes.
Serve in the paper bag or transfer to a 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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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and milk barely smell alike, yet cooks put them together in 78,219 recipes: they work on texture and structure more than aroma.
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 during gentle, moist cooking.
- Flour
- Lightly thickens the cooking liquid and helps it cling to the eel pieces.
- Onion
- Adds savory sweetness and aroma that infuse the eels as they steam.
- Milk, water, or stock
- Supplies the moisture that gently steams the eels inside the sealed bag.
The step that matters
Sealing the paper bag. A tight seal traps steam so the eels cook in their own moisture. A loose bag lets steam escape, which can dry the fish and slow even cooking.
Swap the onion
How well each one fits the dish's main ingredients (pepper, parsley, flour, milk):
- Carrotfits better
- Parsnipfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against pepper, parsley, flour, milk. 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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