Why it works: Onion and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓
The Professor's Curry
Ingredients
Directions
In a stew-pan, melt the butter and add the sliced onions.
Cook the onions until soft, then fry them until very brown and remove from the pan.
Add the meat to the pan and fry until brown, then remove.
Stir in the curry powder and fry for a minute.
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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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + meattop 16% of all pairsSmell alikemoderateCooked together7,594 recipes
Shared aroma: guaiacol (smoky, sweet).
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Onion + meattop 17% of all pairsSmell alikelowCooked together6,364 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
- Onions
- Soften and brown to build sweetness and a deep, savoury flavour base.
- Butter
- Carries heat evenly and adds richness while the onions and meat brown.
- Meat
- Provides the main protein, and browning it adds savoury flavour to the curry.
- Curry powder
- Releases aromatic spice compounds when fried briefly in fat, giving the dish its character.
The step that matters
Browning the onions very brown. Deep browning drives Maillard reactions and caramelisation, which give the curry its depth. Heat that is too high can scorch them and leave a bitter taste, so watch them closely.
Swap the onion
How well each one fits the dish's main ingredients (butter, meat):
- Potatofits better
- Shallotfits about as well
- Onionthe original
- Asparagusfits about as well
Fit is the average pairing score against butter, meat. 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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