Why it works: Bread and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Devilled Kidneys
Ingredients
Directions
Prepare
Mix mustard, gherkins, mushroom ketchup, and egg in a bowl.
Dip each kidney in the mixture, then coat with bread crumbs.
Cook and serve
Heat butter in a chafing dish until very hot.
Cook the kidneys in the hot butter for 10 minutes.
Serve immediately while 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.
-
Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Mushroom + breadtop 10% of all pairsSmell alikemoderateCooked together2,536 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + breadtop 13% of all pairsSmell alikemoderateCooked together22,662 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
Mustard + mushroomtop 15% of all pairsSmell alikemoderateCooked together881 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
- Sheep kidneys
- The main protein, cooked through in hot butter until tender.
- Egg
- Binds the seasoning mixture so it clings to the kidneys.
- Bread crumbs
- Form a crisp, browned coating on the outside of the kidneys.
- Butter
- Conducts heat for frying and adds richness and browning.
- Mushroom ketchup
- Adds savory, umami depth to the coating mixture.
The step that matters
Cook the kidneys in very hot butter. The butter must be very hot before the kidneys go in, so the coating sears and browns quickly. Cooking in cooler fat lets the kidneys steam and the crumbs turn soggy and pale.
Swap the mustard
How well each one fits the dish's main ingredients (mushroom, ketchup, egg, bread, butter):
- Shallotfits better
- Capsicumfits better
- Asparagusfits better
- Mustardthe original
Fit is the average pairing score against mushroom, ketchup, egg, bread, 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.
Brown Bread461 recipes
White Bread80 recipes
Bread Omelette60 recipes
Mushroom Soup60 recipes