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 ↓
Mutton Curry
Ingredients
Directions
Make the sauce
Fry the chopped onion in butter until soft.
Mix curry powder, salt, and flour together, then stir the mixture into the butter and onion.
Gradually add hot water or stock, stirring continuously.
Cook and serve
Cut the mutton into pieces and add to the sauce.
Simmer until the mutton is tender.
Serve 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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Butter + muttontop 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).
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Onion + muttontop 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
- Mutton
- Provides the main protein; simmering slowly makes the cold cooked meat tender and juicy.
- Butter
- Carries the curry spices and softens the onion, adding richness to the sauce.
- Flour
- Thickens the liquid into a smooth sauce that clings to the meat.
- Curry powder
- Supplies the dominant spiced aroma and flavour of the dish.
- Onion
- Softens and sweetens as it cooks, forming the flavour base of the sauce.
The step that matters
Adding the hot liquid gradually. Adding the liquid a little at a time while stirring continuously keeps the flour from forming lumps, so the sauce thickens smoothly instead of clumping.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, mutton):
- Leekfits better
- Shallotfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against butter, flour, mutton. 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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