Why it works: Butter and milk 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 ↓
Bean Soup
Ingredients
Directions
Cook the beans
Parboil the white beans with a pinch of baking soda.
Drain the water and add fresh water, then boil until done.
Watch carefully to prevent sticking and scorching.
Finish and serve
Rub the beans through a puree strainer or colander to remove the hulls.
Season with salt, pepper, and butter.
Thin to the desired consistency with milk and let boil 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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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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Beans + milktop 17% of all pairsSmell alikemoderateCooked together1,266 recipes
Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).
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Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + buttertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White beans
- Form the body of the soup once cooked and pureed into a smooth base.
- Baking soda
- Softens the bean skins so the beans cook more evenly and become tender.
- Butter
- Adds richness and a smooth, rounded mouthfeel to the finished soup.
- Milk
- Thins the puree to the desired consistency and adds creaminess.
The step that matters
Watch carefully to prevent sticking and scorching. Beans are dense and starchy, so they settle and stick to the bottom of the pot as they simmer. Scorched starch gives a burnt flavour that spreads through the whole soup, so stir regularly and keep the heat gentle.
Swap the beans
How well each one fits the dish's main ingredients (pepper, butter, milk):
- Cocoafits better
- Walnutfits about as well
- Lima beansfits about as well
- Beansthe original
Fit is the average pairing score against pepper, butter, milk. 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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