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 ↓
Eel Soup
Ingredients
Directions
Prepare the eels
Skin the eels.
Bone 1 or 2 of them.
Cut the eels into very small pieces.
Make the soup
Fry the pieces lightly in a stewpan with butter and parsley.
Add water, bread crust, mace, whole pepper, onion, and sweet herbs.
Cover the pot.
Stew until the fish breaks from the bones.
Strain the mixture.
Pound the strained mixture to a paste.
Pass the paste through a sieve.
Finish and serve
Toast the bread.
Cut the toasted bread into dice.
Pour the boiling soup over the toasted bread.
Add the scallops of eel.
Mix cream or milk with flour.
Add the mixture to the soup.
Serve.
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.
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eels
- Provide the main body of the soup, breaking down into the paste that flavours it.
- Cream or milk
- Adds richness and body, softening the soup's flavour and texture.
- Flour
- Thickens the cream or milk so it blends smoothly into the soup.
- Bread
- Toasted bread is diced and soaked by the hot soup, giving body and a toasty flavour.
- Butter
- Fat for frying the eel pieces, adding richness and browning them lightly.
The step that matters
Add the cream or milk and flour mixture. Flour mixed into cold liquid before adding it to hot soup helps prevent lumps, and the soup should be kept from boiling hard after the dairy goes in so it does not curdle or separate.
Swap the mace
How well each one fits the dish's main ingredients (butter, parsley, bread, pepper, onion, cream, flour):
- Thymefits better
- Capersfits better
- Nutmegfits better
- Macethe original
Fit is the average pairing score against butter, parsley, bread, pepper, onion, cream, flour. 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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