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 ↓
String Beans
Ingredients
Directions
Prepare
Cut the blossom end of the beans and pull back to remove the string.
Pare a thin strip from the other edge of the pod.
Cut the beans into pieces one inch long and soak in cold water for 30 minutes.
Cook and serve
Drain the beans and place them in a saucepan of boiling water with 1 teaspoon of salt and 1 tablespoon of butter.
Boil gently for 1 hour.
Drain the beans, place them in a serving dish, and add the remaining butter, salt, and pepper.
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).
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Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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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
- Beans
- Form the main body of the dish, becoming tender through long gentle boiling.
- Butter
- Adds richness and a smooth coating to the cooked beans.
The step that matters
Boil gently for 1 hour. Long, gentle simmering softens the fibrous pod walls until they are tender. A hard rolling boil can break the beans apart and leave them unevenly cooked.
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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