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Dessert

Boiled Sponge Cake

A sponge cake made with beaten egg whites and yolks, sugar, water, flour, lemon juice, and powdered sugar for icing.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Sugar and flour 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 ↓

Boiled 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 whites until very stiff.

  2. Add the egg yolks and beat until light.

  3. In a saucepan, bring the sugar and water to a boil.

  4. Pour the hot mixture into the beaten eggs, beating well until cool.

  5. Fold in the flour gently.

Bake and ice

  1. Bake in two layers at 350°F (175°C).

  2. For icing, thicken the lemon juice with powdered sugar.

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + lemontop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  5. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

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

Egg whites
Whipped into a stiff foam that gives the cake its light, airy structure.
Egg yolks
Add richness and tenderness and help set the crumb as the cake bakes.
Sugar
Sweetens the cake and, with the hot syrup, helps stabilise the whipped eggs.
All-purpose flour
Provides the starch and gluten network that sets the cake's structure.
Lemon juice
Adds acidity and bright flavor to the icing.

The step that matters

Pour the hot syrup into the beaten eggs. The hot syrup must be poured in slowly while beating so it is evenly absorbed and cools the mixture. Beating until cool keeps the foam stable, so the batter does not deflate before the flour is folded in.

Swap the lemon

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

  1. Raisinfits better
  2. Vanillafits better
  3. Lemonthe original
  4. Figfits about as well

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