Why it works: Beans and flour are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 2,080 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
French Beans
Ingredients
Directions
Prepare
String the beans and cut each into eight strips or four.
Soak the beans in salt water for 1 hour.
Cook and serve
Boil the beans in 2 or 3 changes of salted water until nearly tender.
Drain the water, add 2 tablespoons of broth, a little flour, and a bit of butter.
Stew gently until fully tender.
Serve hot.
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 + flourtop 11% of all pairsSmell alikemoderateCooked together2,080 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
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, becoming tender through boiling and stewing.
- Broth
- Adds savoury liquid that flavours the beans as they stew.
- Flour
- Thickens the cooking liquid slightly, giving the beans a light body.
- Butter
- Adds richness and a smooth, glossy mouthfeel to the finished beans.
The step that matters
Stew gently until fully tender. Beans need slow, gentle heat to soften evenly without breaking apart. Vigorous boiling at this stage can split the skins and make the beans mushy, while the flour can clump if the liquid is not kept moving gently.
Swap the beans
How well each one fits the dish's main ingredients (flour, butter):
- Almondfits better
- Macadamia nutfits better
- Cashew nutfits better
- Beansthe original
Fit is the average pairing score against flour, butter. 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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