Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Broiled Kidneys
Ingredients
Directions
Prepare
Chop the onion, parsley, and any green herb finely.
Mix the butter, salt, pepper, and cayenne together.
Set aside to warm.
Cook and serve
Wash the kidneys in cold water and salt, split them, and remove the white centers.
Broil the kidneys quickly.
Place them on the warm dish, turning to coat with the seasonings.
Serve hot, garnished with parsley or lemon slices.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Kidneys
- Form the main body of the dish, cooked quickly so they stay tender inside.
- Butter
- Carries the seasonings and adds richness and moisture when coating the hot kidneys.
- Onion
- Adds a mild, savoury aroma and flavour base to the seasoned butter.
The step that matters
Broil the kidneys quickly. Kidneys are delicate and turn tough and dry when overcooked. A short, hot broil sears the outside while keeping the inside tender and juicy.
Swap the onion
How well each one fits the dish's main ingredients (butter, parsley, pepper):
- Carrotfits better
- Shallotfits better
- Potatofits better
- Onionthe original
Fit is the average pairing score against butter, parsley, 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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