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Pea Soup

A simple pea soup made with peas, milk, butter, flour, salt, and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Pea Soup

Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Pea Soup

Ingredients

Directions

Prepare

  1. Press the peas through a colander.

  2. Boil the milk in a saucepan.

  3. Rub together the butter and flour.

Make the soup

  1. When the milk begins to boil, add the peas and butter mixture.

  2. Stir constantly until it thickens.

  3. Add salt and pepper to taste, then serve.

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Peas + peppertop 15% of all pairs
    Smell alikemoderate
    Cooked together5,331 recipes

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

  5. Peas + milktop 16% of all pairs
    Smell alikemoderate
    Cooked together1,309 recipes

    Shared aroma: hexanal (green, grassy).

Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Peas
Provide the main body and sweet, vegetal flavor of the soup.
Milk
Forms the creamy liquid base that the soup thickens within.
Butter
Adds richness and fat, carrying flavor and smoothing the texture.
Flour
Starch thickens the hot liquid, giving the soup its body.

The step that matters

Stir constantly until it thickens. Flour starch needs continuous stirring as the mixture heats; otherwise it clumps into lumps or scorches on the bottom of the pan before it thickens evenly.

Swap the peas

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

  1. Almondfits better
  2. Chestnutfits better
  3. Milletfits better
  4. Peasthe original

Fit is the average pairing score against milk, butter, flour, 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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