Why it works: Onion and carrot are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 21,601 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Collared Eels
Ingredients
Directions
Poach the eels
Clean the eels and cut them into 2‑inch pieces.
Place the eels in cold water seasoned with salt, 2 dozen peppercorns, the onion, carrot, and vinegar.
Bring to a boil, skim well, and boil steadily for 1 hour or longer if the eels are large.
Remove the eels, slip out the bones, and cut the meat into small pieces.
Make the aspic
Return the bones to the pot and boil the liquid uncovered for 30 minutes, then strain.
Dissolve the gelatine in a little cold water and stir it into the strained liquid.
Set and serve
Rinse a mold in cold water, arrange the eel pieces and slices of hard‑boiled egg in it, and add a few sprigs of parsley.
Pour the liquid over the eel and egg, then refrigerate until set.
Turn out the mold and serve with a salad.
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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Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Carrot + vinegartop 23% of all pairsSmell alikemoderateCooked together2,892 recipes
Shared aroma: acetic acid (sour, vinegar).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eels (in the method)
- Provide the main flesh, which is set in a clear savory jelly.
- Gelatine
- Sets the strained cooking liquid into a firm jelly that holds the eel pieces.
- Onion
- Adds aromatic flavor to the poaching liquid that carries into the stock.
- Carrot
- Adds sweetness and aromatic flavor to the poaching liquid.
- Vinegar
- Adds acidity that brightens the poaching liquid and balances the rich fish.
The step that matters
Skim the poaching liquid well. Skimming removes foam and coagulated proteins that would cloud the stock, so the strained liquid sets clear and clean-tasting around the eel.
Swap the carrot
How well each one fits the dish's main ingredients (onion, vinegar):
- Mustardfits better
- Cucumberfits better
- Radishfits better
- Carrotthe original
Fit is the average pairing score against onion, vinegar. 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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