Why it works: Flour and ketchup are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 2,435 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Kidneys Saute
Ingredients
Directions
Prepare
Slice the kidneys about ¼ inch thick.
Dip each piece into flour.
Cut bacon into thin strips.
Cook
Heat a little hot fat in a tin.
Frizzle the strips in the hot fat.
Add the kidneys to the hot fat.
Cook for 4-5 minutes, turning occasionally.
Pour off excess fat.
Sprinkle with pepper and coarse sea salt.
Add 1 tablespoon of ketchup or tomato sauce.
Add 1 tablespoon of boiling water, stir together.
Serve
Pour the mixture over a slice of hot toast.
Serve immediately.
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.
-
Flour + ketchuptop 13% of all pairsSmell alikemoderateCooked together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + ketchuptop 24% of all pairsSmell alikelowCooked together3,207 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Kidneys
- The main ingredient, sliced thin so it cooks quickly in the hot fat.
- Flour
- Coats the kidney slices, helping them brown in the hot fat.
- Bacon
- Frizzled in the fat to add savoury, smoky flavour to the dish.
- Ketchup or tomato sauce
- Adds sweetness and acidity to the pan mixture.
The step that matters
Cook for 4-5 minutes, turning occasionally. Kidneys cook quickly and become tough and rubbery if overcooked, so timing matters. Turning helps both sides brown evenly without drying out.
“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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