Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Haricot Soup
Ingredients
Directions
Prepare the beans
Soak the haricot beans in plenty of cold water overnight.
Drain the beans and place them in 2 quarts of cold water.
Simmer the soup
Bring the mixture to a gentle boil.
Add the onion, mace, celery, peppercorns, and carrot.
Simmer until the beans are tender.
Finish the soup
Pass the mixture through a wire sieve using a wooden spoon.
Return the soup to the saucepan, add the milk and salt, and stir in parsley if 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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Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Carrot + celerytop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
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Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Beans + carrottop 4% of all pairsSmell alikestrongCooked together1,443 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Beans + celerytop 6% of all pairsSmell alikestrongCooked together1,159 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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 starch that thicken the soup once puréed.
- Milk
- Adds richness and a smoother, creamier mouthfeel to the finished soup.
- Carrot
- Contributes subtle sweetness and body to the soup's base flavour.
- Onion
- Builds savoury depth and aroma as it softens in the simmering liquid.
- Celery
- Adds aromatic, savoury flavour to the simmering broth.
The step that matters
Simmer until the beans are tender. Dried beans must cook fully to soften their starch and skins; undercooked beans stay grainy and will not purée smoothly through the sieve.
Swap the parsley
The recipe marks parsley as optional. How well each one fits the dish's main ingredients (beans, carrot, milk, onion, mace, celery):
- Parsleythe original
- Cuminfits about as well
- Thymefits about as well
- Marjoramfits about as well
Fit is the average pairing score against beans, carrot, milk, onion, mace, celery. 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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