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Dessert

Potato Sponge Cake

A sponge cake made with potato flour, eggs, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Flour and sugar are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓

Potato Sponge Cake

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the batter

  1. Beat the egg yolks with the sugar until well combined.

  2. Whip the egg whites until stiff peaks form.

  3. Fold the potato flour into the yolk and sugar mixture.

  4. Gently add the whipped egg whites to the mixture.

Bake

  1. Preheat the oven to 350°F (175°C) and bake until done.

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. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Egg + potatotop 29% of all pairs
    Smell alikemoderate
    Cooked together4,978 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

Egg and flour barely smell alike, yet cooks put them together in 106,462 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

Eggs
Whipped whites trap air for lift, while yolks add richness and structure to the crumb.
Potato flour
Provides starch that sets the cake's structure and gives it a tender, moist texture.
Sugar
Sweetens the cake and stabilizes the beaten yolks, helping them hold their volume.

The step that matters

Gently add the whipped egg whites to the mixture. Whipped egg whites hold the air that makes a sponge rise. Stirring or deflating them vigorously knocks out that air, leaving a dense, flat cake.

Swap the potato

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

  1. Arrowrootfits better
  2. Sweet potatofits better
  3. Shallotfits better
  4. Potatothe original

Fit is the average pairing score against egg, flour, sugar. 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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