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
Brown the chicken
Season the chicken pieces with salt and pepper, dredge in flour, and brown in hot butter.
Transfer the chicken to a stew pan.
Make the sauce
In the same pan, fry the sliced onion in the remaining butter until colored but not browned.
Mix 1 tablespoon of flour, 1 teaspoon of sugar, and 1 teaspoon of curry powder, and brown them in the butter.
Slowly add 1 cup of water or stock and 1 cup of strained tomatoes (or chopped sour apple), and season with salt and pepper.
Pour the sauce over the chicken and simmer for 1 hour or until tender.
Finish and serve
Add 1 cup of hot milk or cream, boil for 1 minute longer, and 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.
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
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).
-
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; simmering until tender makes the meat soft and easy to eat.
- Flour
- Dredging coats the chicken and browning in butter builds color; flour also thickens the sauce.
- Butter
- Fat for browning the chicken and onion, adding rich flavor.
- Onion
- Softens and sweetens as it cooks, forming a flavor base for the sauce.
- Curry powder
- Supplies the spice aroma and flavor that define the dish, bloomed in butter.
- Milk or cream
- Adds richness and a mellow, creamy texture to the finished sauce.
The step that matters
Browning the flour, sugar and curry powder in butter. Frying the spices briefly in fat releases their aromatic compounds, while the flour must cook enough to lose its raw taste and to thicken the sauce smoothly. Stirring constantly prevents scorching, which would make the sauce bitter.
Swap the onion
How well each one fits the dish's main ingredients (chicken, pepper, flour, butter, sugar, tomato, milk):
- Capsicumfits better
- Potatofits better
- Sweet potatofits better
- Onionthe original
Fit is the average pairing score against chicken, pepper, flour, butter, sugar, tomato, 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.
More chicken curry recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Tomato Soup526 recipes
Chicken Broth257 recipes
Chicken Soup156 recipes
Cream of Tomato Soup107 recipes