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Potato Soup

A simple soup made with boiled potatoes, stock, onion, milk, and parsley.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Potato Soup

Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Potato Soup

Ingredients

Directions

Make the soup

  1. Slice the potatoes and onion.

  2. Boil them in the stock for two hours.

  3. Rub the mixture through a sieve.

Finish and serve

  1. Stir in the milk and heat through.

  2. Garnish with chopped parsley 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. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

  2. Potato + parsleytop 5% of all pairs
    Smell alikemoderate
    Cooked together2,855 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  3. Onion + parsleytop 9% of all pairs
    Smell alikemoderate
    Cooked together25,843 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  4. Potato + milktop 9% of all pairs
    Smell alikemoderate
    Cooked together3,611 recipes

    Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).

  5. Onion + milktop 20% of all pairs
    Smell alikemoderate
    Cooked together13,418 recipes

    Shared aroma: hexanal (green, grassy).

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

What each ingredient does

Potatoes
Break down during long simmering to thicken the soup and give body.
Stock
Forms the liquid base and carries the savory flavor of the soup.
Onion
Softens during simmering and adds a mild, sweet aroma to the soup.
Milk
Adds creaminess and softens the flavor of the finished soup.

The step that matters

Heat the milk through gently. Milk can scorch on the base of the pan or separate and curdle if it is boiled hard after being added. Stirring it in at the end and warming it gently keeps the soup smooth and creamy.

Swap the parsley

How well each one fits the dish's main ingredients (potato, onion, milk):

  1. Garlicfits better
  2. Thymefits about as well
  3. Celeryfits about as well
  4. Parsleythe original

Fit is the average pairing score against potato, onion, milk. 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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