Name: White Bean Soup
Ingredients: 1½ cups navy, pea, or other dried white beans, washed and picked over; about 6 cups chicken, beef, or vegetable stock, or water, plus more if necessary; 1 medium onion, quartered; 2 tbsp butter or extra-virgin olive oil (optional); salt and freshly ground black pepper to taste; minced fresh parsley leaves for garnish

Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,118 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

The recipe

Ingredients

Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)

1½ cups navy, pea, or other dried white beans, washed and picked over
about 6 cups chicken, beef, or vegetable stock, or water, plus more if necessary
1 medium onion, quartered
2 tbsp butter or extra-virgin olive oil (optional)
salt and freshly ground black pepper to taste
minced fresh parsley leaves for garnish

Directions

Cook the beans

Place the beans, stock or water, and onion in a large, deep saucepan or casserole; turn the heat to medium‑high.
When it boils, turn the heat down to medium‑low and cover partially.
Cook, stirring occasionally, until the beans are very soft, at least 1 hour.

Purée and finish

Put the mixture through a food mill or strainer, or puree it in a blender (you may prepare the soup in advance up to this point. Cover, refrigerate for up to 2 days, and reheat before proceeding).
Reheat, adding more stock or water if necessary to achieve the consistency you like.
Stir in the butter or oil, season with salt and pepper, garnish, and serve.

Recipe from the Recipes Wiki (Fandom).

This recipe comes from the Recipes Wiki on Fandom and is licensed CC BY-SA 4.0. Our formatting and summaries are shared under the same licence.

Steps grouped into stages for easier reading; the method is the source's own.

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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.

Pepper + parsleytop 2% of all pairs

Aroma overlapstrong

Mentioned together34,118 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Chicken + oniontop 4% of all pairs

Aroma overlapmoderate

Mentioned together17,808 recipes

Shared aroma: gamma-nonanolactone (coconut, sweet).
Beans + oniontop 5% of all pairs

Aroma overlapstrong

Mentioned together5,241 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Beans + chickentop 5% of all pairs

Aroma overlapstrong

Mentioned together1,430 recipes

Shared aroma: trans,trans-2,4-nonadienal (fatty, green).
Onion + parsleytop 6% of all pairs

Aroma overlapstrong

Mentioned together25,834 recipes

Shared aroma: coumarin (sweet, hay).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Navy or pea beans: Provide the starch and body that thicken the soup into a creamy texture once puréed.
Onion: Adds savory sweetness and aromatic depth as it softens into the broth.
Butter or extra-virgin olive oil: Adds richness and a silky mouthfeel to the finished soup.

The step that matters

Cooking the beans until very soft. Dried beans must be cooked fully until tender, because the starch needs to gelatinize for the purée to turn smooth and creamy. Undercooked beans stay grainy and can leave the soup thick, pasty, or unpleasantly firm.

Flavor stand-ins for the parsley

How well each one fits the dish's main ingredients (beans, chicken, onion, butter, pepper):

Garlicbetter flavor fit
Thymeabout as good a flavor fit
Celeryabout as good a flavor fit
Parsleythe original

Fit is the average pairing score against beans, chicken, onion, butter, 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.