Why it works: Onion and vinegar are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 18,226 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓
Bombay Curry
Ingredients
Directions
Prepare
Fry the sliced onions in a pan until brown and crisp.
In a small saucepan, mix stock, curry powder, chutney, sugar, and salt, then bring to a boil.
Cook
Add the meat and apple slices to the pan with the onions.
Pour the sauce over the meat and apple, and fry for 30 minutes, stirring constantly to prevent burning.
When nearly cooked, add lemon juice and chili vinegar.
Serve
Serve hot with rice on the side.
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 + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Apple + vinegartop 16% of all pairsSmell alikemoderateCooked together1,884 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
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
- Browned and crisped onions build the deep, savory base flavor of the curry.
- Curry powder
- Supplies the spiced aroma and flavor that defines the dish.
- Meat
- Forms the main protein, becoming tender as it simmers in the sauce.
- Apple
- Adds mild sweetness and body that softens into the sauce.
- Chili vinegar
- Adds sharp acidity that brightens the rich, spiced sauce.
The step that matters
Stirring the sauce while it fries. The sugar and sliced apple in the sauce can scorch on the pan bottom during the 30-minute fry. Constant stirring spreads heat evenly and prevents burnt, bitter flavor.
Swap the onion
How well each one fits the dish's main ingredients (sugar, meat, apple, lemon, vinegar):
- Mustardfits better
- Capsicumfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against sugar, meat, apple, lemon, vinegar. 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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