Why it works: Onion and mustard match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Pigs' Ears Oreilles De Cochons Cn Menu-de-Roi
Ingredients
Directions
Prepare the ears
Singe the pigs' ears to remove hairs and scrape them well.
Wash the ears in several waters.
Blanch and cook the ears in a braise until done.
Let the ears cool, then cut them into equal fillets.
Make the onion sauce
Slice the onions into fillets or half-rings, removing the head, tail, and heart.
Melt a bit of butter in a stew-pan.
Add the onions and cook without browning.
Moisten the onions with espagnole sauce and beef juice, then let them simmer.
Skim the mixture.
Finish and serve
Just before serving, add the pigs' ears, salt, mustard, and vinegar to taste.
Serve the dish hot.
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 + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + beeftop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sauce + mustardtop 13% of all pairsSmell alikemoderateCooked together2,120 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 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
- Pigs' ears
- Provide the main meat, which is cooked tender in a braise and then cut into fillets.
- Butter
- Fat for cooking the onions gently in the pan, adding richness and flavour.
- Onions
- Form the base of the dish, softening into a sweet, mellow body in the sauce.
- Espagnole sauce
- Brown-sauce base that gives the dish body, depth and a rich savoury flavour.
- Beef juice
- Adds concentrated meaty savour to the sauce that the onions simmer in.
- Vinegar
- Adds acidity that brightens the rich sauce and balances its savouriness.
The step that matters
Cook the onions without browning. Browned onions turn bitter and darken the sauce, while gently softened onions stay sweet and mild. Keeping the heat low lets them release sugars slowly without caramelising.
Swap the mustard
How well each one fits the dish's main ingredients (butter, onion, sauce, beef, vinegar):
- Mustardthe original
- Potatofits about as well
- Chivefits about as well
- Shallotfits about as well
Fit is the average pairing score against butter, onion, sauce, beef, 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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