Why it works: Parsley and celery match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 6,810 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Black Bean Soup
Ingredients
Directions
Prepare the beans
Soak the black beans overnight, then drain.
Add the parsley, celery root, bay leaf, peppercorns, clove, and onion tied in cheesecloth, cover with cold water, and boil slowly until tender, adding water as needed.
Once the beans are soft, remove the seasonings and pass the beans through a sieve, mashing them with a spoon.
Make the soup
Add the soup stock to the mashed beans.
Melt the butter, stir in the flour, and gradually mix into the stock.
Season with salt and pepper.
Serve
Just before serving, add the sherry wine, lemon slice, and diced egg white to the tureen.
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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Parsley + celerytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Clove + peppertop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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
- Black beans
- Form the body of the soup once softened and sieved into a thick purée.
- Butter
- Enriches the soup with fat and a rounder, smoother mouthfeel.
- Flour
- Thickens the stock when cooked in butter and mixed in, giving the soup more body.
- Soup stock
- Supplies the liquid base that thins the bean purée into soup.
- Sherry wine
- Adds acidity and a mellow, aromatic note to the finished soup.
The step that matters
Mixing the butter and flour into the stock. If flour is added without first cooking it in the melted butter, or stirred in too quickly, it clumps and leaves lumps. Mixing gradually into the stock keeps the thickening smooth.
Swap the onion
How well each one fits the dish's main ingredients (beans, butter, flour, parsley, celery, clove, pepper):
- Carrotfits better
- Turnipfits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against beans, butter, flour, parsley, celery, clove, 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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