Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,122 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Haricots a LA Bonne Femme
Ingredients
Directions
Cook the beans
Soak the haricot beans in water with the salt.
Bring to a boil, then reduce heat and simmer for about 2 hours until easily crushed.
Drain the beans and return them to the saucepan.
Finish and serve
Add the butter, parsley, salt, pepper, and ½ pint of the cooking liquid.
Shake the saucepan over low heat until the butter melts.
Serve very 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 aroma chemistry they share, and how many recipes mention both.
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Beans + parsleytop 8% of all pairsAroma overlapstrongMentioned together1,376 recipes
Shared aroma: linalool (floral, citrus).
-
Beans + peppertop 11% of all pairsAroma overlapmoderateMentioned together4,733 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + parsleytop 15% of all pairsAroma overlapmoderateMentioned together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
-
Beans + buttertop 19% of all pairsAroma overlapmoderateMentioned 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
- Haricot beans
- Provide the main body of the dish, softening into a creamy, mashable texture when simmered.
- Butter
- Adds richness and fat, emulsifying with the cooking liquid to give the beans a silky coating.
- Cooking liquid (in the method)
- Carries moisture and starch from the beans, helping bind the butter into a smooth sauce.
The step that matters
Shaking the beans over low heat as the butter melts. Gentle heat and constant movement help the melting butter combine with the starchy cooking liquid into a smooth coating. High heat or stillness can split the butter and leave the beans greasy.
Flavor stand-ins for the beans
How well each one fits the dish's main ingredients (butter, parsley, pepper):
- Chickpeabetter flavor fit
- Black-eyed peaabout as good a flavor fit
- Walnutabout as good a flavor fit
- Beansthe original
Fit is the average pairing score against butter, parsley, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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