Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Haricot Beans
Ingredients
Directions
Soak and cook
Wash the beans and soak them in cold water overnight or for at least 12 hours.
Drain the beans and place them in a saucepan with enough cold water to cover.
Add the onion and 1 tablespoon of salt for every 2 quarts of water.
Bring to a boil, then simmer slowly for about 2.5 hours until tender.
Finish and serve
Remove the onion and strain the beans, letting them dry in the saucepan with the lid partially off.
Add the butter, parsley, and season with pepper and salt.
Gently shake the beans for 1-2 minutes, then transfer to a hot dish and serve.
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.
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Beans + oniontop 7% of all pairsSmell alikestrongCooked together5,242 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beans + parsleytop 8% of all pairsSmell alikestrongCooked together1,376 recipes
Shared aroma: linalool (floral, citrus).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Beans + peppertop 11% of all pairsSmell alikemoderateCooked together4,733 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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 and starchy texture of the dish once cooked until tender.
- Butter
- Adds richness and a silky mouthfeel that coats the cooked beans.
- Onion
- Infuses the cooking water with savoury aroma that gently flavours the beans.
The step that matters
Simmer slowly until tender. A rolling boil can break up the bean skins and leave them mushy, while gentle simmering lets the starches soften evenly. Beans also need to be fully tender before the salt and acid are balanced, so check texture rather than relying only on the time.
Swap the beans
How well each one fits the dish's main ingredients (onion, parsley, butter, pepper):
- Black-eyed peafits about as well
- Chickpeafits about as well
- Beansthe original
- Lentilsfits about as well
Fit is the average pairing score against onion, parsley, butter, pepper. 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.
More haricot beans recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
German Style String Beans7 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes