Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Chicken Curry
Ingredients
Directions
Make the curry base
Melt the butter in a pot.
Add the finely chopped onions and cook until browned, stirring constantly.
Add the chicken cut into small pieces, curry powder, tomatoes, salt, and cayenne pepper, then stir well.
Simmer and serve
Cover tightly and let simmer for 1 hour, stirring occasionally.
Add the milk and bring to a boil.
Serve with 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.
Photo for illustrative purposes only · Contact us to use it
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Chicken + tomatotop 8% of all pairsSmell alikemoderateCooked together6,031 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Chicken + oniontop 8% of all pairsSmell alikemoderateCooked together17,814 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Chicken
- Provides the main protein, which becomes tender as it simmers in the sauce.
- Onions
- Browning builds savoury sweetness and depth that forms the base of the sauce.
- Butter
- Carries the curry powder's fat-soluble aromatics and adds richness to the sauce.
- Curry powder
- Supplies the spice aroma that defines the dish; blooming in fat intensifies it.
- Tomatoes
- Add acidity and body, helping thicken the sauce as they break down during simmering.
- Milk
- Adds creaminess and softens the sharpness of the tomatoes and spices.
The step that matters
Cook the onions until browned, stirring constantly. Onions that are only softened stay pale and sharp; browning develops sweet, deep flavours through the Maillard reaction. Constant stirring prevents scorching, which would leave a bitter taste in the sauce.
Swap the onion
How well each one fits the dish's main ingredients (chicken, butter, tomato, pepper, milk):
- Capsicumfits better
- Potatofits better
- Onionthe original
- Asparagusfits about as well
Fit is the average pairing score against chicken, butter, tomato, pepper, milk. 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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