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Potato Soup

A simple soup made from boiled potatoes, onion, and salt, optionally enriched with salt pork, milk, or egg.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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

  1. Boil the potatoes, onion, and salt in a little water until very soft.

  2. Mash the mixture until smooth.

  3. Gradually stir in 1 quart of hot water to achieve desired consistency.

  4. For a richer soup, add salt pork, milk, or a beaten egg.

  5. Add chopped celery leaves for extra flavor if desired.

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. Pepper + celerytop 5% of all pairs
    Smell alikestrong
    Cooked together16,012 recipes

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

  3. Potato + porktop 5% of all pairs
    Smell alikemoderate
    Cooked together2,668 recipes

    Shared aroma: sotolon (curry, maple).

  4. Potato + celerytop 7% of all pairs
    Smell alikemoderate
    Cooked together2,047 recipes

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

  5. Onion + celerytop 7% of all pairs
    Smell alikemoderate
    Cooked together18,518 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

What each ingredient does

Potatoes
Break down when boiled and mashed to give the soup its body and thickness.
Milk or beaten egg
Adds richness and creaminess to the soup, giving it a smoother mouthfeel.
Salt pork
Adds fat and savory flavor to the broth.

The step that matters

Mash the mixture until smooth. Potatoes release starch as their cells break down. Mashing them fully while very soft gives an even, smooth texture; lumps remain if they are not cooked through first.

Swap the celery

The recipe marks celery as optional. How well each one fits the dish's main ingredients (potato, onion, pepper, pork, milk):

  1. Garlicfits better
  2. Thymefits better
  3. Parsleyfits about as well
  4. Celerythe original

Fit is the average pairing score against potato, onion, pepper, pork, 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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