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 ↓
Cubiiieb Mutto]^
Ingredients
Directions
Prepare
Slice the onions into thin rings.
Fry them in butter until light brown.
Stir in curry powder, flour, and salt. Mix well.
Make the curry
Cut the mutton into thin slices or mince if necessary, then add to the pan.
When browned, add stock or gravy.
Stew gently for about 30 minutes.
Serve
Serve in a dish with a border of boiled rice.
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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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Mutton + buttertop 16% of all pairsSmell alikemoderateCooked together3,781 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Mutton + oniontop 18% of all pairsSmell alikelowCooked together4,531 recipes
Shared aroma: 2,4-decadienal (seaweed).
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
- Onions
- Soften and sweeten as they fry, building the base flavour of the curry.
- Butter
- Carries the curry powder's aroma and adds richness to the frying base.
- Curry powder
- Supplies the spice aroma that defines the dish.
- Flour
- Thickens the sauce so it clings to the meat.
- Stock or water
- Forms the liquid that turns the mixture into a stewed sauce.
The step that matters
Frying the onions until light brown. Browning the onions slowly in butter develops sweetness and depth; if they are pale or burnt, the curry tastes flat or bitter. Stirring the curry powder and flour into the fat also cooks out their raw taste before liquid is added.
Swap the onion
How well each one fits the dish's main ingredients (mutton, butter, flour):
- Leekfits better
- Shallotfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against mutton, butter, flour. 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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