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
Prepare
Remove the pods and shell the beans.
Skim the skins off the beans.
Cook
Place the skinned beans in a thickly buttered pot.
Mix the butter with flour, salt, and minced onion.
Add the butter mixture and water to the beans.
Cook for 45 minutes, reducing heat after the first 5 minutes.
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 + flourtop 11% of all pairsSmell alikemoderateCooked together2,080 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Flour + oniontop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Broad beans
- Form the main body of the dish, providing the bulk of the texture and flavor.
- Butter
- Adds richness and fat, carrying flavor and helping the beans stay tender.
- All-purpose flour
- Thickens the cooking liquid into a light sauce as it heats.
The step that matters
Reducing the heat after 5 minutes. Starting at high heat can scorch the butter and flour mixture on the bottom of the pot. Lowering the heat after the first few minutes lets the beans cook gently and evenly, so the liquid thickens without sticking or burning.
Swap the onion
How well each one fits the dish's main ingredients (beans, butter, flour):
- Sweet potatofits better
- Chivefits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against beans, 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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