Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Haricot Bean Soup
Ingredients
Directions
Prepare the beans
Soak the beans overnight in cold water with a little washing soda.
Drain and wash the beans, then place them in an enamel bowl with 6 cups of cold water and the bacon rinds or ham bone.
Make the soup
Add the chopped onion and simmer until the beans are soft.
Rub the mixture through a fine sieve, adding salt, pepper, and about ½ cup of the cooking liquid.
Bring to a boil, then stir in the milk and butter. Do not boil again.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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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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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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Haricot beans
- Provide the main body and thickening starch that gives the soup its texture.
- Milk
- Adds richness and a smoother, creamier mouthfeel to the finished soup.
- Butter
- Adds fat for a rounder flavour and silkier texture.
- Onion
- Contributes savoury sweetness and aroma as it softens during simmering.
The step that matters
Do not boil again after adding the milk and butter. Boiling milk after it is added can cause it to curdle and separate, leaving the soup grainy and less smooth.
Swap the beans
How well each one fits the dish's main ingredients (onion, ham, milk, butter, pepper):
- Beansthe original
- Lima beansfits about as well
- Peasfits about as well
- Peanutfits less well
Fit is the average pairing score against onion, ham, milk, 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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