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Dessert

Boiled Sponge Cake

A sponge cake made with beaten egg whites, sugar, flour, and lemon extract, baked at 300°F.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓

Boiled Sponge Cake

Oven, in the book's wordsA slow oven

Ingredients

Directions

The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Separate the eggs and beat the whites until stiff peaks form.

  2. Boil the sugar and water until it reaches a 'hair' stage for frosting.

Combine

  1. Beat the hot sugar mixture into the egg whites until cold.

  2. Add the beaten yolks and lemon extract.

  3. Sift the flour and cream of tartar together 4 or 5 times, then gently fold into the mixture.

Bake

  1. Pour into an angel food pan and bake at 300°F (150°C) for 50 to 60 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 + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

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

Flour and egg 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
Whites whip into a foam that gives the cake its air and lift, while yolks add richness.
Sugar
Sweetens the cake and, cooked to a syrup, helps stabilize the whipped whites.
Flour
Provides the structure that holds the airy foam together as the cake sets.
Cream of tartar
Acidifies the egg whites, helping the foam stay stable and resist collapsing.

The step that matters

Beat the hot sugar mixture into the egg whites until cold. The hot syrup partly cooks the whites and sets the foam, so it holds air through baking. Pouring it in slowly while beating prevents lumps and keeps the whites from deflating.

Swap the lemon

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

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

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