Why it works: Onion and carrot are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 21,601 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Curry Sauce
Ingredients
Directions
Prepare
Peel and chop the onions into small pieces.
In a frying pan, melt the butter and fry the onions until they begin to change color.
Chop the carrot and sour apple into small pieces and add them to the pan.
Make the sauce
Once the onions and vegetables are browned, add the vegetable stock or water and simmer until tender.
Stir in the curry paste and curry powder.
Rub the mixture through a wire sieve to ensure a smooth sauce.
Adjust thickness by adding less water if onions are small, and add bay leaves if desired.
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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Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Carrot + appletop 13% of all pairsSmell alikemoderateCooked together680 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Butter + appletop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Onion + appletop 19% of all pairsSmell alikemoderateCooked together3,206 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Soften and caramelize into a sweet, savory base for the sauce.
- Butter
- Carries the frying heat and adds richness to the onions.
- Curry powder
- Provides the main spice aroma that defines the sauce's flavor.
- Sour apple
- Adds acidity and fruitiness that balances the sweetness of the onions.
- Carrot
- Adds natural sweetness and body to the sauce base.
The step that matters
Browning the onions and vegetables. If the onions are pale or undercooked, the sauce lacks depth and sweetness. Frying slowly until golden lets sugars brown, building flavor before the liquid is added.
Swap the apple
How well each one fits the dish's main ingredients (onion, butter, carrot):
- Avocadofits better
- Coconutfits better
- Mangofits better
- Applethe original
Fit is the average pairing score against onion, butter, carrot. 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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