Why it works: Beef and mushroom are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 3,232 recipes. Both carry 2,4-nonadienal, which smells fatty, green. The science ↓
Beef Kidney
Ingredients
Directions
Prepare and fry
Cut the kidney into thin slices and dust with flour.
Fry the slices until they are a nice brown.
Make the gravy and serve
Remove excess fat from the pan and add butter.
Pour in boiling water, then add salt, pepper, and mushroom catsup.
Let the gravy boil briefly, then pour it over the kidney and serve.
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.
Photo for illustrative purposes only · Contact us to use it
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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Beef + mushroomtop 4% of all pairsSmell alikemoderateCooked together3,232 recipes
Shared aroma: 2,4-nonadienal (fatty, green).
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Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + mushroomtop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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 dish, becoming tender when sliced thin and fried.
- Flour
- Coats the slices so they brown well and help thicken the gravy.
- Butter
- Adds fat and richness to the pan for the gravy.
- Mushroom catsup
- Adds savoury, umami depth to the gravy.
The step that matters
Frying the slices until nicely browned. Browning, driven by the Maillard reaction on the flour-dusted surface, builds the main flavour. Pale or steamed slices taste flat and can turn tough if overcooked, so fry over sufficient heat in a single layer.
“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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