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 ↓
Stewed Kidneys
Ingredients
Directions
Prepare the kidney
Wash the beef kidney, remove all fat, and cut it into small pieces.
Place the kidney in a pot with ½ cup of water and 1¼ teaspoons of salt.
Cook hard for 15 to 20 minutes.
Pour off the water.
Simmer and finish
Cover the pot and let it simmer for several hours.
Ten minutes before serving, make a thickening with 2 tablespoons of browned flour and cold water.
Stir the thickening into the kidney along with 1 tablespoon of butter, salt, pepper, a pinch of mustard, and sherry wine if desired.
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).
-
Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + mustardtop 13% of all pairsSmell alikemoderateCooked together5,066 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + winetop 13% of all pairsSmell alikemoderateCooked together8,645 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beef kidney
- Forms the main body of the stew, becoming tender during long, gentle simmering.
- Browned flour
- Thickens the cooking liquid into a smooth, slightly nutty gravy when stirred in.
- Butter
- Adds richness and a smooth finish to the thickened sauce.
- Sherry wine
- Adds acidity and aroma to the gravy when included.
The step that matters
Simmering for several hours. Kidney is tough muscle tissue, and long, gentle simmering breaks down its connective tissue so it becomes tender. Cooking too hard can toughen the meat, so keep the pot at a gentle simmer.
Swap the mustard
How well each one fits the dish's main ingredients (beef, flour, butter, pepper, sherry, wine):
- Capsicumfits better
- Shallotfits better
- Tomatofits better
- Mustardthe original
Fit is the average pairing score against beef, flour, butter, pepper, sherry, wine. 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.
More stewed kidneys recipes
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.
Roast Beef211 recipes
Beef Loaf175 recipes
Corned Beef87 recipes
Beef Broth67 recipes