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Pototo Soup

A simple potato soup made with sliced potatoes, water, egg, milk, flour, butter, and additional potatoes, boiled until tender.

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

Pototo Soup

Ingredients

Directions

Cook the potatoes

  1. Place the sliced potatoes in a kettle with the water.

  2. Cook until the potatoes are tender.

Finish the soup

  1. In a bowl, beat the egg and mix in the milk and flour.

  2. Add the 2 additional potatoes to the kettle.

  3. Stir in the egg mixture and butter.

  4. Boil for 10 minutes and serve hot.

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.

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

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

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

    Shared aroma: isobutyraldehyde (malty, green).

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

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

  5. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 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
Provide the bulk and starch that thicken the soup as they cook and soften.
Egg
Enriches the broth and adds body and richness when stirred in.
Milk
Adds creaminess and a mild sweetness to the broth.
Butter
Adds fat for a smoother mouthfeel and rich flavour.

The step that matters

Stir in the egg mixture. Egg proteins set with heat, so the mixture can curdle or turn grainy if the soup is boiling hard when it goes in. Adding it gently and keeping the heat controlled keeps the soup smooth.

Swap the potato

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

  1. Chivefits about as well
  2. Potatothe original
  3. Leekfits about as well
  4. Asparagusfits about as well

Fit is the average pairing score against egg, milk, flour, butter. 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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