Why it works: Cucumber and onion match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 6,050 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Modern Cookery
Ingredients
Directions
Prepare the base
Melt the butter in a pan.
Add the water and pepper, stirring well.
Add flavourings and cook
Choose either cucumbers or minced mushrooms and add to the mixture.
If using curry powder, add it along with the chopped onion.
Cook for 2 hours, stirring occasionally.
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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Cucumber + oniontop 8% of all pairsSmell alikestrongCooked together6,050 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + cucumbertop 12% of all pairsSmell alikemoderateCooked together5,991 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Adds fat for richness and carries the flavour of the other ingredients.
- Onion
- Adds sweetness and aroma as it softens slowly during cooking.
- Cucumbers
- Softens and releases moisture, giving a mild, juicy texture.
- Minced mushrooms
- Adds savoury body and moisture as they soften during cooking.
- Curry powder
- Adds warm, spiced aroma to the dish.
The step that matters
Stirring during the long cook. Cooking for 2 hours with little liquid can cause ingredients to stick and scorch on the base of the pan. Stirring occasionally spreads the heat evenly and keeps the mixture from drying out or darkening unevenly.
Swap the cucumber
How well each one fits the dish's main ingredients (butter, pepper, onion):
- Potatofits better
- Capsicumfits better
- Chivefits better
- Cucumberthe original
Fit is the average pairing score against butter, pepper, onion. 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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