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 Broth
Ingredients
Directions
Prepare
Clean and skin the eel, then cut it into small pieces.
Place the eel and other ingredients in a stewpan.
Make the broth
Simmer gently until the liquid is reduced by half, removing any scum that rises.
Strain the broth through a fine sieve and cool it.
Serve
When ready to serve, remove the fat from the top and warm the desired amount.
Serve with toasted bread.
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.
Photo for illustrative purposes only · Contact us to use it
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).
-
Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Parsley + clovetop 6% of all pairsSmell alikestrongCooked together6,768 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Parsley + oniontop 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eel
- Provides the main flavour and body of the broth as it simmers.
- Onion
- Adds sweetness and aromatic depth to the broth as it cooks.
- Water
- Acts as the cooking liquid that extracts flavour and gelatine from the eel.
The step that matters
Simmering gently and skimming scum. A gentle simmer keeps the broth clear, while a rolling boil would emulsify fat and cloud the liquid. Removing scum as it rises keeps the flavour clean.
Swap the onion
How well each one fits the dish's main ingredients (parsley, clove, pepper):
- Carrotfits better
- Shallotfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against parsley, clove, pepper. 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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