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 ↓
Bean Soup
Ingredients
Directions
Make the soup
In a large pot, combine the meat, bones, and water. Bring to a boil.
Add the beans, salt pork, onions, red pepper, and coarse sea salt.
Simmer for several hours until the beans are tender.
Finish and serve
Stir in the vinegar before serving.
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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Pork + oniontop 10% of all pairsSmell alikemoderateCooked together18,214 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pork + beanstop 11% of all pairsSmell alikemoderateCooked together2,000 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beans
- Provide the bulk of the soup and, as they cook, thicken the broth and become tender.
- Meat and bones
- Release flavor and gelatin into the water, giving the broth body and savoriness.
- Salt pork
- Adds fat and salty, smoky depth that enriches the broth as it simmers.
- Vinegar
- Adds acidity that brightens the finished soup and balances its richness.
The step that matters
Simmer until the beans are tender. Dried beans need long, gentle simmering to soften their starch and cell walls fully. Stopping early leaves them firm, and a hard boil can break them apart or make the broth cloudy.
Swap the beans
How well each one fits the dish's main ingredients (meat, pork, onion, pepper, vinegar):
- Sesamefits better
- Beansthe original
- Soybeanfits about as well
- Peanutfits about as well
Fit is the average pairing score against meat, pork, onion, pepper, vinegar. 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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