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Dessert

Potato Sponge Cake

A sponge cake made with potato flour, eggs, sugar, baking powder, salt, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Potato Sponge Cake

Ingredients

Directions

The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the batter

  1. Beat the eggs for half an hour.

  2. Add the sugar and beat a little more.

  3. Flavor with vanilla and add a pinch of salt.

  4. Sift in the potato flour and baking powder.

Bake

  1. Bake in an unfloured pan at 300°F (150°C) for 25 to 30 minutes.

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. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  2. Flour + vanillatop 12% of all pairs
    Smell alikemoderate
    Cooked together19,241 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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 to trap air, giving the cake its light, sponge-like structure.
Sugar
Sweetens the cake and helps stabilise the whipped egg foam.
Potato flour
Provides the cake's starch structure while staying tender and light.
Baking powder
Releases gas in the oven so the batter rises and lightens.

The step that matters

Beating the eggs thoroughly before adding other ingredients. The cake's rise depends on air whipped into the eggs. Under-beaten eggs hold less air, so the sponge may be dense and flat. Folding in the flour and baking powder gently preserves that air.

Swap the potato

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

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

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