Why it works: Parsley and shallot match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 3,737 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Stewed Kidneys
Ingredients
Directions
Prepare
Skin the kidneys and cut them in halves.
Cook
Fry the kidneys in the butter for five minutes.
Add flour, pepper, salt, ketchup, chopped shallot, and stock.
Simmer for twenty minutes.
Just before serving, add the parsley.
Serve
Serve the fried slices of bread arranged around the dish.
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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Parsley + shallottop 1% of all pairsSmell alikestrongCooked together3,737 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Flour + shallottop 6% of all pairsSmell alikestrongCooked together2,081 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Shallot + peppertop 11% of all pairsSmell alikemoderateCooked together5,898 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sheep's kidneys
- Provide the main meat, which becomes tender with gentle simmering.
- Butter
- Browns the kidneys during frying and adds richness to the sauce.
- Flour
- Thickens the cooking liquid into a smooth, lightly bound sauce.
- Stock
- Forms the liquid base that the kidneys simmer in.
- Shallot
- Adds a mild onion-like aroma and savoury depth to the sauce.
- Ketchup
- Contributes sweetness and acidity that rounds out the sauce.
The step that matters
Simmering with flour. Flour must be cooked in the liquid for a while so its starch swells fully and the sauce thickens smoothly without a raw, floury taste. Keep the heat gentle so the kidneys stay tender rather than toughening.
Swap the parsley
How well each one fits the dish's main ingredients (flour, butter, shallot, ketchup, bread, pepper):
- Capersfits better
- Parsleythe original
- Tarragonfits about as well
- Thymefits less well
Fit is the average pairing score against flour, butter, shallot, ketchup, bread, pepper. 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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