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Egg Balls for Soup

Egg balls are small, boiled egg mixtures shaped into balls, served in soup.

From an old cookbook · modernised transcription
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Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Egg Balls for Soup

Ingredients

Directions

Make the dough

  1. Rub the yolks of the hard boiled eggs with the butter, pepper, and salt until smooth.

  2. Add the raw egg and mix well.

  3. Incorporate enough flour to form a paste that holds together.

Shape and serve

  1. Shape the mixture into small balls using floured hands.

  2. Set the balls aside in a cool place until ready to serve.

  3. Just before serving the soup, boil the egg balls for one minute.

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

    Shared aroma: isobutyraldehyde (malty, green).

  2. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Pepper + flourtop 19% of all pairs
    Smell alikemoderate
    Cooked together50,459 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

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

Hard boiled eggs
Their mashed yolks form the body of the paste.
Raw egg
Binds the mixture so the balls hold their shape.
Butter
Adds fat for a smoother, richer texture.
Flour
Stiffens the paste so it holds together when shaped.

The step that matters

Adding the flour. Too much flour makes the balls dense and dry, while too little leaves them too soft to hold their shape in the soup. Add it gradually until the paste just holds together.

“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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