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Dessert

Boiled Sponge Cake

A sponge cake made by boiling water with sugar, mixing with eggs, adding flour, and baking.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 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

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the batter

  1. Boil the water and pour it over the sugar.

  2. Beat the eggs separately, then combine and beat them together.

  3. Pour the boiling sugar mixture over the beaten eggs and stir constantly until cool enough to add the flour.

  4. Fold in the flour gently.

Bake

  1. Bake in a loaf pan in a moderate oven at 350°F (175°C).

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 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
Beaten eggs trap air and provide the main structure that holds the sponge up.
Sugar
Sweetens the cake and, dissolved in boiling water, helps give the crumb a tender texture.
Flour
Forms the set structure of the crumb once the batter is baked.
Water
Adds moisture and, boiled, helps dissolve the sugar into a syrup.

The step that matters

Folding in the flour. Overmixing after the flour goes in develops gluten and knocks out the air beaten into the eggs, which can leave the cake dense and tough. Fold gently, just until no dry flour shows.

“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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