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Pea Soup

A simple soup made with peas, water, onion, carrots, butter, salt, and pepper.

From an old cookbook · modernised transcription
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Pea Soup

Why it works: Carrot and pepper match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 14,555 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Pea Soup

Ingredients

Directions

The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

  1. In a pot, melt the butter over medium heat.

  2. Add the chopped onion and diced carrots, cooking until softened.

  3. Add the dried peas and water, bringing to a boil.

  4. Reduce heat and simmer for about 1 hour, or until peas are tender.

  5. Season with salt and pepper before serving.

Recipe from a historical cookbook (Internet Archive).

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.

Photo for illustrative purposes only · Contact us to use it

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.

  1. Carrot + peppertop 6% of all pairs
    Smell alikestrong
    Cooked together14,555 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Onion + carrottop 6% of all pairs
    Smell alikemoderate
    Cooked together21,601 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Peas + carrottop 7% of all pairs
    Smell alikemoderate
    Cooked together2,994 recipes

    Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).

  4. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Peas + oniontop 13% of all pairs
    Smell alikemoderate
    Cooked together5,460 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

Dried peas
Break down during simmering to thicken the soup and give it body.
Onion
Softens in butter to build a savory, sweet base for the soup.
Carrots
Soften during cooking and add natural sweetness and color.
Butter
Carries the aromatics and adds richness to the soup base.

The step that matters

Simmering until the peas are tender. Dried peas need a long, gentle simmer to soften fully. Stopping early leaves them firm, and boiling too hard can break up the peas unevenly.

Swap the peas

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

  1. Beansfits better
  2. Sesamefits better
  3. Black-eyed peafits better
  4. Peasthe original

Fit is the average pairing score against onion, carrot, 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.

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