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 Stew Eels
Ingredients
Directions
The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare the eels
Clean and skin the eels; cut off the heads, fins, and tails, and divide the bodies into 4-5 inch pieces.
Stew
Place the pieces in a stewpan and cover with water, adding parsley, pepper, and salt. Boil for about 15 minutes.
Move the pieces to one side of the pan and thicken the sauce with flour and butter kneaded together.
Serve
Serve in a dish with toasted bread around the edges.
For a richer dish, dip the eel pieces in beaten egg, coat with bread crumbs, and brown in a frying pan before stewing in seasoned beef gravy.
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).
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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Pepper + beeftop 10% of all pairsSmell alikemoderateCooked together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- The main protein, which becomes tender and flaky as it simmers.
- Flour
- Thickens the sauce when kneaded with butter, giving it body.
- Butter
- Adds richness and fat, and combines with flour to thicken the sauce.
- Beaten egg
- Helps bread crumbs adhere to the eel pieces for the richer version.
- Bread crumbs
- Form a golden coating that browns when fried in the richer version.
The step that matters
Thickening the sauce with flour and butter. Kneaded flour and butter must be added to the simmering liquid in pieces, not dumped in whole, so the starch hydrates evenly and the sauce thickens smoothly without lumps.
Swap the parsley
How well each one fits the dish's main ingredients (pepper, flour, butter, bread, egg, beef):
- Parsleythe original
- Nutmegfits about as well
- Tarragonfits less well
- Capersfits less well
Fit is the average pairing score against pepper, flour, butter, bread, egg, beef. 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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