Why it works: Beans and butter are a kitchen classic. They rank in the top 19% of all ingredient pairs, and cooks put them together in 2,799 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
To Boil French Beans
Ingredients
Directions
Prepare
Slice the beans and wash them in cold water.
Boil
Put the beans into plenty of boiling water seasoned with salt and baking soda.
Boil quickly without a lid for about 10 to 15 minutes until soft.
Drain and serve
Strain the beans and shake off the excess water.
Serve in a hot dish, plain or with melted butter.
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 + 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
- French beans
- Form the main body of the dish, cooking down to a soft, tender texture.
- Baking soda
- Raises the water's alkalinity, helping the beans soften quickly and keep a bright green colour.
- Melted butter
- Adds richness and a smooth fat coating when served over the hot beans.
The step that matters
Boil quickly without a lid. A rapid boil in plenty of water keeps the temperature high and the beans cooking evenly. Leaving the lid off lets volatile acids escape, which helps keep the green colour bright.
“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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