Why it works: Beans and lemon match in chemistry and in kitchens. They rank in the top 12% of all ingredient pairs, and cooks put them together in 1,474 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
To Boil French or String Beans
Ingredients
Directions
Prepare the beans
Trim the ends and stalks of the beans and wash them well.
Boil the beans in salted water until tender, about 12 to 18 minutes.
Drain the beans in a colander and shake off excess water.
Butter and serve
In a clean saucepan, melt 2 ounces of fresh butter.
Add the drained beans to the butter, along with white pepper, salt, and lemon juice.
Toss gently over medium heat for a few minutes until hot.
If the butter separates, add a spoonful of veal gravy or boiling water.
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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Beans + lemontop 12% of all pairsSmell alikestrongCooked together1,474 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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White pepper + lemontop 16% of all pairsSmell alikelowCooked together1,658 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Lemon + vealtop 17% of all pairsSmell alikelowCooked together4,580 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 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
- Fresh butter
- Coats the beans and adds richness and a silky, glossy finish.
- Juice of half a lemon
- Adds acidity that brightens the flavour of the buttered beans.
- Young french or string beans
- Form the main body of the dish, cooked until tender and then tossed in butter.
The step that matters
Tossing the drained beans in the butter. Beans must be drained well so excess water does not dilute the butter. If the butter separates, a little liquid helps it re-emulsify into a smooth coating.
Swap the white pepper
How well each one fits the dish's main ingredients (beans, butter, lemon, veal):
- Parsleyfits better
- Sagefits better
- Tarragonfits better
- White pepperthe original
Fit is the average pairing score against beans, butter, lemon, veal. 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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