Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Stewed Eels
Ingredients
Directions
Prepare
Cut the eels into pieces about 2 inches long.
In a saucepan, combine the eels, stock, herbs, onions, peppercorns, mace, and a little lemon juice.
Poach the eels
Bring to a boil, skim off any foam, and simmer for about 30 minutes until the eels are cooked.
Remove the eels and keep them warm.
Make the sauce
In another saucepan, mix the butter and flour and cook gently without browning.
Add the stock from the first saucepan to the butter and flour mixture, stirring until boiling.
Boil for about 4 minutes, then season with salt and cayenne.
Stir in the cream.
Serve
Place the eels in the center of a hot dish and pour the sauce over them, coating each piece thoroughly.
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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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Onion + macetop 17% of all pairsSmell alikelowCooked together7,078 recipes
Shared aroma: eugenol (clove, spicy).
Butter and flour 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
- Provide the main protein, which becomes tender when gently simmered in the stock.
- Butter
- Forms the fat base of the roux, carrying flavour and giving the sauce a smooth richness.
- Flour
- Thickens the sauce when cooked with butter and combined with the hot stock.
- White stock
- Cooks the eels and provides the liquid that becomes the body of the sauce.
- Cream
- Adds richness and softens the sauce's flavour at the end of cooking.
- Lemon juice
- Adds acidity that brightens the flavour of the rich, mild sauce.
The step that matters
Cook the roux without browning. Cooking butter and flour gently lets the starch swell and thicken smoothly without developing a brown, toasted flavour that would change the sauce's colour and taste.
Swap the mace
How well each one fits the dish's main ingredients (butter, flour, onion, lemon, cream):
- Parsleyfits better
- Capersfits better
- Nutmegfits better
- Macethe original
Fit is the average pairing score against butter, flour, onion, lemon, cream. 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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