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 each end and remove the strings from both sides of the pods.
Cut the beans into strips lengthwise or across.
Cook and serve
Boil the beans in water until perfectly tender, about 2 to 3 hours.
Drain the beans and pour over them the rich milk or cream.
Season with butter, pepper, and coarse sea salt 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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Butter + beanstop 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
- Yellow butter beans
- Form the main body of the dish, becoming tender through long boiling.
- Rich milk or cream
- Adds richness and a soft, moist texture to the cooked beans.
- Butter
- Adds fat and rounded flavour when seasoned over the finished beans.
The step that matters
Boil the beans until perfectly tender. Dried or mature beans need prolonged, gentle boiling so their starches soften fully. Stopping early leaves them firm and chalky, and the texture cannot be fixed afterward.
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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