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 white beans overnight.
Make the soup
In a large pot, combine the soaked beans, water, fried onion, partly boiled potatoes, pork, red pepper, cabbage, and salt.
Bring to a boil and let simmer slowly for 4 to 5 hours.
Pass the mixture through a colander and return the pulp to the pot.
Serve
Fry the croutons in butter until browned on all sides.
Pour the soup into a tureen, add the croutons, and serve hot.
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).
-
Beans + potatotop 5% of all pairsSmell alikestrongCooked together655 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Potato + porktop 5% of all pairsSmell alikemoderateCooked together2,668 recipes
Shared aroma: sotolon (curry, maple).
-
Pepper + cabbagetop 5% of all pairsSmell alikemoderateCooked together4,081 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White beans
- Provide the bulk and body of the soup as they soften and break down during simmering.
- Potatoes
- Partly cooked, they thicken the soup and add a creamy texture when passed through a colander.
- Pork
- Adds savory, meaty flavor to the broth during the long simmer.
- Onion
- Fried or sautéed first, it adds sweetness and aroma as its sugars brown in butter.
- Butter
- Browns the croutons, adding richness and a golden crust.
The step that matters
Simmering the soup slowly. A gentle simmer over 4 to 5 hours lets the beans and potatoes fully soften and release their starch, so the pulp thickens the soup. A hard boil can break the mixture unevenly and leave the beans tough.
Swap the cabbage
How well each one fits the dish's main ingredients (beans, onion, potato, pork, pepper, bread, butter):
- Tomatofits better
- Capsicumfits better
- Chivefits better
- Cabbagethe original
Fit is the average pairing score against beans, onion, potato, pork, pepper, bread, butter. 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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