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Dessert

Boiled Sponge Cake

A sponge cake made by boiling sugar syrup and folding it into beaten eggs and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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 ↓

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 the eggs

  1. Separate the egg whites and yolks, then beat them separately.

  2. Combine the beaten whites and yolks.

Make the batter

  1. Boil the sugar in ¼ cup of water until clear.

  2. Slowly pour the sugar syrup into the beaten eggs, a little at a time, to avoid cooking the eggs.

  3. Beat the mixture until cool, then gently stir in the flour without beating.

Bake

  1. Bake in a slow oven at 300°F (150°C) for 45 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. Vanilla + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together5,961 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  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
Whites trap air and yolks add richness, giving the cake its light, airy structure.
Sugar
Sweetens the cake and, dissolved into syrup, helps the batter stay moist and tender.
Flour
Provides the structure that holds the cake together once it sets in the oven.

The step that matters

Adding the sugar syrup to the eggs. Hot syrup poured in too quickly can scramble the eggs. Adding it slowly, a little at a time, lets the eggs warm gradually and stay smooth, keeping the batter light.

Swap the lemon

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

  1. Raisinfits better
  2. Blueberryfits better
  3. Figfits better
  4. Lemonthe 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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