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 ↓
Curry
Ingredients
Directions
Brown the onion
Heat the clarified dripping or butter in a saucepan.
Peel and finely chop the onion.
Add the chopped onion to the hot dripping.
Brown the onion carefully.
Shake the saucepan occasionally to prevent sticking.
Prepare the meat and apple
Cut the cold meat into small pieces.
Peel and core the apple.
Chop the apple finely.
Make the curry
Strain the browned onion.
Return the dripping to the saucepan.
Add the pieces of cold meat.
Brown them on both sides.
Stir in the curry powder.
Stir in the flour.
Stir in the chopped apple.
Stir in the salt.
Pour in the cold water.
Add the browned onion.
Stir until it boils.
Reduce the heat.
Simmer
Simmer for 30 minutes with the lid off.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + appletop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Onion + appletop 19% of all pairsSmell alikemoderateCooked together3,206 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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
- Clarified dripping or butter
- Carries the heat and adds rich fat flavour for frying the onion and meat.
- Onion
- Browns to add sweetness and savoury depth to the sauce.
- Curry powder
- Provides the main spice aroma and flavour of the dish.
- Flour
- Thickens the cooking liquid into a smoother, heavier sauce.
- Apple
- Adds mild sweetness and body as it softens into the sauce.
The step that matters
Brown the onion carefully. Onion browns through the Maillard reaction, building sweet, savoury flavour. Too much heat scorches the sugars, leaving bitter, burnt notes that spoil the whole curry.
Swap the apple
How well each one fits the dish's main ingredients (butter, onion, flour):
- Avocadofits better
- Raisinfits better
- Coconutfits better
- Applethe original
Fit is the average pairing score against butter, onion, 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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