Why it works: Onion and potato are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Bean Soup
Ingredients
Directions
Prepare
Soak the beans overnight in lukewarm water.
The next morning, combine the soaked beans and cold water in a pot.
Cook
Boil for 3-4 hours.
Add celery, onions, and sliced potatoes.
Simmer until the vegetables are tender.
Season with caraway or dill seed as desired.
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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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Celery + carawaytop 4% of all pairsSmell alikestrongCooked together73 recipes
Shared aroma: myristicin (spice, warm).
-
Beans + potatotop 5% of all pairsSmell alikestrongCooked together655 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Beans + celerytop 6% of all pairsSmell alikestrongCooked together1,159 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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Celery + potatotop 7% of all pairsSmell alikemoderateCooked together2,047 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- French beans
- Form the main body of the soup and thicken it as they break down during long cooking.
- Potatoes
- Add starch that softens the broth and gives the soup body.
- Celery
- Adds savory aroma and a mild vegetal flavor to the broth.
The step that matters
Boil for 3-4 hours. Dried beans must be cooked long enough to soften fully, since their starches and cell walls break down only with sustained heat. Stopping early leaves them firm and grainy.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (beans, celery, potato, caraway):
- Carrotfits better
- Beetrootfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against beans, celery, potato, caraway. 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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