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Potato Soup

A simple potato soup made with potatoes, flour, butter, salt, and pepper.

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 pepper are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 8,305 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Potato Soup

Ingredients

Directions

Prepare

  1. Select, wash, and peel the potatoes, then cut them into small pieces.

Make the soup

  1. Boil the potatoes until they melt away.

  2. In a skillet, brown the flour over low heat, stirring constantly.

  3. Stir the browned flour into the potato broth.

  4. Season with butter, coarse sea 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. Potato + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 recipes

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

  2. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

  4. Potato + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + peppertop 19% of all pairs
    Smell alikemoderate
    Cooked together50,459 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter 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 during boiling to thicken the soup and give it body.
Flour
Browned flour thickens the potato broth and adds a toasty, nutty flavour.
Butter
Adds richness and a smooth, rounded mouthfeel at the end.

The step that matters

Browning the flour. Flour browns quickly over low heat, and stirring constantly prevents scorching. Scorched flour turns bitter and dark, so the soup tastes burnt instead of toasty.

Swap the potato

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

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

Fit is the average pairing score against flour, butter, 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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