Why it works: Mushroom and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 12,525 recipes. Both carry trans-2-decenal, which smells waxy, orange. The science ↓
Kidney Stew
Ingredients
Directions
Prepare the kidney
Wash the kidney and remove the core.
Cut it into thin slices.
Mix together the pepper, salt, and flour.
Roll the kidney slices in this mixture.
Cook
Brown the kidney quickly in the butter or bacon fat.
Add the stock or water, skim well, and cook very slowly for two hours.
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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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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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).
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Flour + ketchuptop 13% of all pairsSmell alikemoderateCooked together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Mushroom + ketchuptop 16% of all pairsSmell alikelowCooked together2,225 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Kidney
- Forms the main body of the stew and provides its rich, meaty flavour and texture.
- Flour
- Coats the slices so they brown and thicken the cooking liquid into a light gravy.
- Butter or bacon fat
- Carries heat for browning the kidney and adds richness to the stew.
- Stock or water
- Forms the liquid in which the kidney cooks slowly until tender.
- Mushroom ketchup
- Adds deep savoury, umami flavour to the stew's cooking liquid.
The step that matters
Brown the kidney quickly in the butter or bacon fat. Hot fat browns the floured surface quickly, building flavour through the Maillard reaction. Overcrowding or lingering over the heat can steam the slices and leave them grey and dull.
“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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