Why it works: Mustard and onion 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’ Feet and Ears, Fricassee of
Ingredients
Directions
Clean the pigs' feet and ears, then boil them until very tender.
Cut them into small shreds, about the length of a finger and a quarter of an inch wide.
Fry the shreds in butter until brown but not hard.
In a stewpan, combine the fried shreds with brown gravy, a piece of butter, vinegar, and enough mustard to flavor strongly.
Add salt to taste and thicken with a little flour.
Add half an onion to the mixture.
Slit the boiled feet down the middle, remove the large bones, and dip them in eggs.
Coat the feet with seasoned bread crumbs, then boil or fry them.
Serve the feet on the ragout and squeeze some lemon juice over the top.
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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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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
Swap the onion
How well each one fits the dish's main ingredients (butter, vinegar, mustard, flour, egg, bread, pepper):
- Shallotfits better
- Horseradishfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against butter, vinegar, mustard, flour, egg, bread, pepper. Candidates are from the same food group and used in at least 100 recipes.
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