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Dessert

Sponge Sandwich

A sandwich of sponge cake layers with raspberry jam, dusted with sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Sponge Sandwich

Oven, in the book's wordsA very slow oven

Ingredients

Directions

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

Prepare

  1. Preheat the oven to 300°F (150°C).

Make the batter

  1. Cream the butter and sugar together.

  2. Add the beaten eggs, flour, and baking powder, and mix well.

  3. Beat the mixture for five minutes.

Bake and assemble

  1. Pour into two well-buttered shallow round cake tins.

  2. Bake for about twenty minutes.

  3. Cut each cake in half.

  4. Spread raspberry jam between the layers.

  5. Dust the top with castor 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. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Butter + raspberrytop 16% of all pairs
    Smell alikemoderate
    Cooked together1,308 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

  5. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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
Provide structure and lift as the batter sets in the oven.
Butter
Adds richness and tenderness, and carries flavor through the crumb.
Castor sugar
Sweetens the cake and helps trap air when creamed with butter.
All-purpose flour
Forms the cake's main structure once set by heat.
Baking powder
Releases gas that makes the sponge rise and stay light.
Raspberry jam
Adds sweetness and fruity acidity between the cake layers.

The step that matters

Beat the mixture for five minutes. Beating incorporates air into the creamed batter, which gives the sponge its lift. Under-beating leaves a dense cake, while the air bubbles set in the oven to form the crumb.

Swap the raspberry

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

  1. Raisinfits better
  2. Vanillafits better
  3. Figfits better
  4. Raspberrythe original

Fit is the average pairing score against egg, butter, 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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