Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Collared Eels
Ingredients
Directions
Prepare the eels
Clean, skin, and boil the eels in seasoned water with pepper, salt, onion, bay leaf, clove, and vinegar.
Remove the bones and cut the eels into 2-inch pieces.
Make the jelly
Strain the boiling liquid and reduce it in a saucepan until clear.
Dissolve ¼ ounce of isinglass in each ½ cup of fish gravy and boil for 1 minute.
Let the mixture cool.
Assemble and set
Arrange the eel pieces in a mold with parsley, slices of hard-boiled eggs, and diced anchovies.
Pour the jelly gently over the eel pieces, one tablespoon at a time.
Let the mold sit in cold water for 7-8 hours before turning it out.
Garnish the dish with parsley, lemon juice, and beetroot.
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 + lemontop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + clovetop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Parsley + beetroottop 5% of all pairsSmell alikestrongCooked together745 recipes
Shared aroma: coumarin (sweet, hay).
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 dish, holding their texture through the poaching and setting.
- Isinglass
- Sets the cooled liquid into a firm, clear jelly around the eel pieces.
- Hard-boiled eggs
- Add firm texture and contrast to the soft eel and jelly.
- Anchovies
- Add a salty, savoury depth that seasons the jelly and fish.
The step that matters
Pouring the jelly over the eel pieces. Pouring slowly, one tablespoon at a time, keeps the cooled jelly from disturbing the arranged pieces and lets it settle evenly around them. Jelly that is too hot can cloud or melt the setting, so it should be cool but still liquid.
Swap the onion
How well each one fits the dish's main ingredients (pepper, clove, vinegar, parsley, egg, lemon, beetroot):
- Shallotfits better
- Lettucefits better
- Horseradishfits better
- Onionthe original
Fit is the average pairing score against pepper, clove, vinegar, parsley, egg, lemon, beetroot. 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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