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 Sauce
Ingredients
Directions
Prepare
Pare, core, and slice the apples.
Peel and slice the onions.
Make the sauce
In a saucepan, combine the apples, onions, butter, curry paste, and curry powder.
Simmer until the apples and onions are tender.
Stir in a little flour.
Brown 1 pint of water with browning and stir it into the pan.
Add salt to taste and boil for 20 minutes.
Strain the sauce before use.
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).
-
Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Onion + buttertop 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).
-
Apple + oniontop 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
- Apples
- Break down during simmering to give the sauce body and a mild fruity sweetness.
- Onions
- Soften and sweeten as they cook, adding savoury depth and body to the sauce.
- Butter
- Carries the curry flavours in the pan and adds richness to the sauce.
- Curry powder
- Provides the main spiced aroma and flavour of the sauce.
- Flour
- Thickens the liquid so the sauce becomes smooth and coats a spoon.
The step that matters
Stir in the flour before adding the liquid. Flour must be cooked into the fat and softened fruit and onion so it thickens evenly; adding it to liquid without cooking first can leave lumps and a raw starchy taste.
Swap the apple
How well each one fits the dish's main ingredients (onion, butter, flour):
- Avocadofits better
- Raisinfits better
- Coconutfits better
- Applethe original
Fit is the average pairing score against onion, butter, 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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