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Potato Soup

A creamy soup made from boiled potatoes, butter, milk, salt, and pepper.

From an old cookbook · modernised transcription
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Potato Soup

Why it works: Butter and milk 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 ↓

Potato Soup

Ingredients

Directions

Prepare

  1. Peel and chop the potatoes.

Cook the potatoes

  1. Boil the potatoes in water until tender.

  2. Mash the potatoes and return them to the pot.

Finish the soup

  1. Add butter, milk, and season with salt and pepper.

  2. Stir until well combined and heated through.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  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. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

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

  5. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

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 thicken it as they break down when mashed.
Butter
Adds richness and a smooth, silky mouthfeel to the soup.
Milk
Adds creaminess and dilutes the starch for a smoother, looser texture.

The step that matters

Mash the potatoes and return them to the pot. Mashing releases starch from the cooked potato cells, which thickens the soup. Overworking or using a blender can make it gluey, so mash gently until just smooth.

Swap the potato

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

  1. Potatothe original
  2. Capsicumfits about as well
  3. Tomatofits less well
  4. Asparagusfits less well

Fit is the average pairing score against butter, milk, 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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