Why it works: Pepper and mustard are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 15,430 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Devilled Kidneys
Ingredients
Directions
Prepare
Mix the salt, cayenne, butter, and mustard together in a bowl.
Split each kidney open and remove the core from each kidney.
Take off the thin outer skin of each kidney.
Soak the kidneys in tepid water for 10 minutes.
Run a skewer through each kidney lengthwise and keep the kidneys flat.
Grill and serve
Spread a little of the mixture on each kidney.
Grill the kidneys over a clear fire for 8 minutes, turning constantly.
Remove the skewers from the kidneys.
Place each kidney on a square of toast.
Serve as hot as possible.
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.
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + buttertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + mustardtop 22% of all pairsSmell alikemoderateCooked together8,003 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Kidneys (in the method)
- Form the main body of the dish, and their mild, rich flavour carries the seasoning.
- Butter
- Adds fat and moisture so the mixture spreads easily and keeps the kidneys from drying out.
- Mixed mustard
- Adds sharp, pungent flavour that cuts through the richness of the kidneys and butter.
- Cayenne pepper
- Adds gentle heat that gives the spread a warm, peppery bite.
The step that matters
Grill over a clear fire, turning constantly. Kidneys are delicate and overcook quickly, becoming tough and dry. A clear, hot fire sears the surface, and constant turning spreads the heat evenly so the butter mixture stays moist and the interior cooks through without burning.
Swap the mustard
How well each one fits the dish's main ingredients (pepper, butter):
- Capsicumfits better
- Potatofits better
- Carrotfits better
- Mustardthe original
Fit is the average pairing score against pepper, butter. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes