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Potato Soup

A simple potato soup made with potatoes, onion, pepper, salt, water, and milk.

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

Prepare

  1. Peel and slice the potatoes, then place them in an enamel saucepan.

  2. Add the chopped onion, pepper, salt, and enough hot water to cover the potatoes.

  3. Cook until the potatoes are tender, about 30 minutes.

Finish the soup

  1. Rub the mixture through a colander or fine sieve.

  2. Reheat the strained soup and stir in the milk until creamy.

  3. Adjust the consistency with more water if necessary.

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 + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 recipes

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

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

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

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

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

  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
Form the body of the soup and, once rubbed through a sieve, thicken it.
Milk
Adds richness and a creamy texture to the finished soup.

The step that matters

Rubbing the mixture through a sieve. Pressing the cooked potatoes through a colander or fine sieve breaks down their starch cells into a smooth purée. Skipping or rushing this leaves the soup lumpy and grainy.

Swap the onion

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

  1. Capsicumfits better
  2. Carrotfits better
  3. Tomatofits better
  4. Onionthe original

Fit is the average pairing score against potato, pepper, 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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