Why it works: Beans and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 4,733 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Haricot Beans, Boiled
Ingredients
Directions
Prepare
Soak the beans in cold water for several hours.
Cook
Put the soaked beans in a pot with salted cold water and bring to a boil.
Reduce heat and simmer slowly until tender, about 2 to 2.5 hours.
Drain the beans and let them sit with the lid partially off to dry.
Finish and serve
Add 2 tablespoons of butter and season with pepper and salt.
Toss the beans for about 5 minutes, then serve.
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 + peppertop 11% of all pairsSmell alikemoderateCooked together4,733 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
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
- White haricot beans
- Provide the main body of the dish; they soften and turn creamy as they simmer.
- Butter
- Adds richness and a silky mouthfeel to the warm beans.
The step that matters
Simmer slowly until tender. Keeping the heat low lets the beans soften evenly without splitting or breaking apart. A hard boil can burst the skins and leave the beans mushy outside and firm inside.
Swap the beans
How well each one fits the dish's main ingredients (butter, pepper):
- Walnutfits about as well
- Black-eyed peafits about as well
- Almondfits about as well
- Beansthe original
Fit is the average pairing score against 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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