Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Liver and Kidney Stew
Ingredients
Directions
Prepare the meat
Fry the liver until browned.
Simmer the kidney in 2 quarts of water until done.
Set the kidney aside.
Make the stew
The next day, slice the kidney and liver.
Put the sliced liver and kidney back into the water they were boiled in. Add a few spices.
Thicken with flour rubbed in 2 tablespoons of butter.
Serve
Serve with lemon slices and hard boiled eggs on top. Drizzle with wine.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lemon + winetop 13% of all pairsSmell alikelowCooked together6,157 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + winetop 13% of all pairsSmell alikemoderateCooked together8,645 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Butter and flour 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
- Calves' liver
- Browns in the pan and adds a rich, meaty flavor to the stew.
- Beef kidney
- Becomes tender through simmering and adds a firm, meaty texture to the stew.
- Butter
- Enriches the thickened stew with fat and a rounded flavor.
- Flour
- Thickens the cooking liquid so the stew becomes smooth and body-rich.
- Wine
- Adds acidity and aroma to the finished stew.
The step that matters
Thicken with flour rubbed in butter. Flour must be worked into the butter before stirring into the liquid so it dissolves smoothly instead of forming lumps. Starch thickens the liquid as it heats, so the stew should be kept at a simmer while it sets.
Swap the lemon
How well each one fits the dish's main ingredients (liver, beef, butter, flour, egg, wine):
- Lemonthe original
- Applefits about as well
- Grapefits about as well
- Raisinfits about as well
Fit is the average pairing score against liver, beef, butter, flour, egg, 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.
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