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Potato Soup

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

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

Potato Soup

Ingredients

Directions

Prepare the potatoes

  1. Peel and slice the potatoes.

  2. Boil the potatoes in water until done.

Make the soup

  1. Add the milk and butter, stirring until the butter is dissolved.

Thicken and season

  1. In a pan, mix the butter (the size of an egg) with the flour and brown it.

  2. Gradually stir the browned mixture into the soup.

  3. Season with salt and pepper to taste.

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

    Shared aroma: isobutyraldehyde (malty, green).

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

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

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

Potatoes
Break down while cooking to give the soup its body and starchy base.
Milk
Adds creaminess and a mild, rich flavor to the soup.
Butter
Provides fat for richness and, when browned with flour, a nutty flavor.
Flour
Thickens the soup as its starch swells in the hot liquid.

The step that matters

Gradually stir the browned mixture into the soup. Flour clumps when it meets hot liquid all at once. Adding it gradually and stirring keeps the starch dispersed so the soup thickens smoothly.

Swap the potato

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

  1. Potatothe original
  2. Capsicumfits about as well
  3. Chivefits less well
  4. Shallotfits less well

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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