Why it works: Beans and onion match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 5,242 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Broad Beans
Ingredients
Directions
Place the broad beans in a double saucepan.
Add ½ cup of water, 1 oz of butter, 1 teaspoon of salt, and a pinch of pepper.
Cover tightly and boil the water in the outer saucepan for 2 hours.
Serve the beans plain or with fried onion.
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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Beans + oniontop 7% of all pairsSmell alikestrongCooked together5,242 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beans + peppertop 11% of all pairsSmell alikemoderateCooked together4,733 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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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 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
- Broad beans
- Form the main body of the dish, becoming tender during the long, gentle steaming.
- Butter
- Adds fat and richness, carrying flavour and giving the beans a smooth mouthfeel.
The step that matters
Keep the outer saucepan boiling gently and the lid sealed. The beans cook by steam in the double saucepan, so the water must keep simmering and the lid must fit tightly. If steam escapes or the water boils dry, the beans cook unevenly or not at all.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (beans, butter, pepper):
- Capsicumfits better
- Tomatofits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against beans, butter, pepper. 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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