Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Deviled Kidneys
Ingredients
Directions
Prepare
Wash the kidneys and dry them on a towel.
Split them open without entirely separating the halves.
Cook
Spread a mixture of mustard, flour, vinegar, salt, white pepper, and cayenne on the kidneys.
Broil over a brisk fire until browned.
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 + vinegartop 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).
-
Lamb + peppertop 12% of all pairsSmell alikemoderateCooked together3,165 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Mustard + flourtop 13% of all pairsSmell alikemoderateCooked together5,066 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sheep or lamb kidneys
- Form the main body of the dish, with a mild, rich meat flavor when broiled.
- Dry mustard
- Adds sharp, pungent flavor that cuts the richness of the kidneys.
- Flour
- Thickens the spread so it clings to the kidneys instead of running off.
- Vinegar
- Adds acidity that brightens the flavor and balances the fatty meat.
The step that matters
Broiling until browned. Kidneys cook quickly and turn tough and dry if overcooked. A brisk heat browns the spread and sets the surface while the interior stays tender, so watch them closely.
Swap the white pepper
How well each one fits the dish's main ingredients (lamb, mustard, flour, vinegar, pepper):
- Capersfits better
- Tarragonfits better
- Turmericfits better
- White pepperthe original
Fit is the average pairing score against lamb, mustard, flour, vinegar, pepper. 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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