Why it works: Pepper and parsley 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 ↓
To Boil White Haricot Beans
Ingredients
Directions
Prepare the beans
Wash the beans and soak them in cold water for 12 hours.
Cook the beans
In a clean saucepan, combine the soaked beans, 2 quarts of cold water, the onion, and a small piece of butter.
Boil slowly for about 3 hours.
Drain the beans and remove the onion.
Season and serve
Add salt, pepper, chopped parsley, and 2 oz of butter.
Place over the fire and stir for a few minutes until thoroughly hot.
Serve in a vegetable dish.
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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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
- White haricot beans
- Form the main body of the dish, becoming soft and tender as they simmer slowly in water.
- Butter
- Adds richness and a smooth mouthfeel to the finished beans.
- Onion
- Flavors the cooking water as it simmers with the beans, then is removed.
The step that matters
Boil slowly for about 3 hours. A gentle simmer softens the beans evenly while keeping their skins intact. A hard, rapid boil can break them apart and leave the centers floury or uneven.
Swap the beans
How well each one fits the dish's main ingredients (onion, butter, pepper, parsley):
- Black-eyed peafits about as well
- Chickpeafits about as well
- Beansthe original
- Lentilsfits about as well
Fit is the average pairing score against onion, butter, pepper, parsley. 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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