Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
String Beans
Ingredients
Directions
Prepare the beans
Break off the tops and bottoms of the beans and string them.
Wash the beans in cold water and drain.
Place the beans in a saucepan with boiling salted water and cook until tender.
Make the sauce and serve
In a bowl, beat the egg yolks with the cream and add the butter.
Pour the mixture over the hot beans and mix in the vinegar.
Remove the pan from the heat and steam gently for 6-7 minutes, stirring constantly.
Transfer to a dish and serve immediately.
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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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Beans + buttertop 19% of all pairsSmell alikemoderateCooked together2,799 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Beans + vinegartop 19% of all pairsSmell alikemoderateCooked together1,347 recipes
Shared aroma: isoamyl acetate (banana, pear).
-
Butter + vinegartop 23% of all pairsSmell alikemoderateCooked together13,513 recipes
Shared aroma: isoamyl acetate (banana, pear).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Thicken the cream mixture into a silky, coating sauce as they gently set with heat.
- Cream
- Adds richness and moisture, and softens the set of the egg yolks for a smooth sauce.
- Butter
- Adds fat for a glossy texture and rich flavour to the sauce.
- Vinegar
- Adds acidity that brightens the rich, creamy sauce and balances its richness.
The step that matters
Steam gently while stirring constantly. Egg yolks thicken when heated but scramble if they get too hot or sit still. Gentle heat and constant stirring keep the sauce smooth and coating rather than curdled.
Swap the beans
How well each one fits the dish's main ingredients (cream, egg, butter, vinegar):
- Almondfits better
- Pecansfits better
- Walnutfits better
- Beansthe original
Fit is the average pairing score against cream, egg, butter, vinegar. 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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