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Potato Surprise

A fried potato ball or croquette filled with peas or sweetbreads.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Potato Surprise

Ingredients

Directions

Make the mixture

  1. Combine hot mashed potatoes, celery, pepper, butter, cayenne, salt, and grated onion in a bowl.

  2. Let the mixture cool slightly, then add the egg yolk.

Shape and fill

  1. Shape the mixture into balls.

  2. Fill the center of each ball with peas or sweetbreads.

  3. Shape the balls into croquettes or potato shapes.

Fry

  1. Fry in deep oil until golden brown.

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. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

  2. Celery + peppertop 5% of all pairs
    Smell alikestrong
    Cooked together16,012 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  3. Potato + celerytop 7% of all pairs
    Smell alikemoderate
    Cooked together2,047 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  4. Celery + oniontop 7% of all pairs
    Smell alikemoderate
    Cooked together18,518 recipes

    Shared aroma: guaiacol (smoky, sweet).

  5. Potato + peastop 9% of all pairs
    Smell alikemoderate
    Cooked together1,016 recipes

    Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Mashed potatoes
Provide the bulk and body that holds the croquettes together.
Egg yolk
Binds the mixture and helps it hold its shape when fried.
Butter
Adds richness and moisture to the potato mixture.

The step that matters

Let the mixture cool slightly before adding the egg yolk. Egg yolk begins to set when exposed to heat, so adding it to very hot potatoes can scramble it unevenly and make the mixture harder to shape. Cooling slightly keeps the yolk smooth and blended, so it binds the croquettes properly.

Swap the peas

How well each one fits the dish's main ingredients (potato, celery, pepper, butter, onion, egg):

  1. Beansfits better
  2. Sesamefits better
  3. Walnutfits about as well
  4. Peasthe original

Fit is the average pairing score against potato, celery, pepper, butter, onion, egg. 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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