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 ↓
String' Beans
Ingredients
Directions
Prepare
Cut off both ends of the beans and remove the strings.
Cut the beans into small pieces and soak them in cold water for 30 minutes.
Cook and serve
Drain the beans and boil them in salted water for about 1 hour until tender.
Pour off the water, add milk and pepper, and boil for 1 minute 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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Butter + peppertop 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
- Beans
- The main vegetable; cooking softens its fibres until tender.
- Milk
- Adds moisture and creaminess to the beans as it heats.
- Butter
- Adds fat for richness and a smoother mouthfeel.
The step that matters
Boil until tender. Cooking softens the beans' fibres and cell walls. Judge doneness by texture rather than the clock, since bean size and age change cooking time.
Swap the beans
How well each one fits the dish's main ingredients (butter, milk, pepper):
- Cocoafits better
- Walnutfits about as well
- Lima beansfits about as well
- Beansthe original
Fit is the average pairing score against butter, milk, 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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