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Dessert

Sponge Cake

A light cake made from eggs, sugar, boiling water, baking powder, flour, and optional flavorings, topped with a soft frosting.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Coconut and chocolate are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 1,107 recipes. Both carry gamma-nonanolactone, which smells coconut, sweet. The science ↓

Sponge Cake

Oven, in the book's wordsA quick oven

Ingredients

Directions

Make the batter

  1. Beat 2 eggs thoroughly with 1 cup of sugar and ½ cup of boiling water.

  2. Sift 2 teaspoons of baking powder through 1 cup of sifted flour and add to the mixture.

  3. Season with lemon or vanilla.

  4. For a layer cake, use 2 yolks and an additional egg.

Bake and frost

  1. Bake in jelly cake tins.

  2. Whip the reserved 2 egg whites and stir in sugar until it forms a soft frosting.

  3. For coconut cake, spread frosting on each layer and sprinkle with coconut.

  4. For chocolate cake, grate ½ cup of chocolate and mix it into the frosting before spreading it between the layers.

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. Coconut + chocolatetop 9% of all pairs
    Smell alikemoderate
    Cooked together1,107 recipes

    Shared aroma: gamma-nonanolactone (coconut, sweet).

  2. Sugar + chocolatetop 13% of all pairs
    Smell alikemoderate
    Cooked together15,404 recipes

    Shared aroma: guaiacol (smoky, sweet).

  3. Lemon + coconuttop 13% of all pairs
    Smell alikemoderate
    Cooked together1,233 recipes

    Shared aroma: decanal (soap, orange peel).

  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).

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

Eggs
Beaten to trap air and give the cake its light, airy structure.
Sugar
Sweetens the cake and helps stabilise the whipped egg structure.
Flour
Provides the main structure that sets the cake as it bakes.
Baking powder
Releases gas during baking so the cake rises and becomes tender.
Boiling water
Adds moisture and helps the batter expand, keeping the crumb soft.

The step that matters

Beating the eggs thoroughly with sugar and boiling water. Whole eggs beaten well trap air that expands in the oven; under-beaten batter bakes dense and flat. Adding the flour and baking powder only after the eggs are well aerated keeps that air in the batter.

Swap the coconut

The recipe marks coconut as optional. How well each one fits the dish's main ingredients (egg, sugar, flour, lemon, chocolate):

  1. Vanillafits better
  2. Raisinfits better
  3. Orangefits about as well
  4. Coconutthe original

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