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Dessert

Banana Sponge

A light banana sponge cake made with gelatin, banana pulp, egg whites, and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Lemon and banana are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 1,134 recipes. Both carry 1-octen-3-ol, which smells mushroom, earthy. The science ↓

Banana Sponge

Ingredients

Directions

Make the mixture

  1. Soften the gelatin in cold water.

  2. Add the boiling water and sugar, stirring until dissolved.

  3. Strain the mixture over the banana pulp and heat to scalding point.

  4. Let cool slightly, then add the lemon juice.

  5. Beat the mixture over ice water until light and cold.

Set and serve

  1. Gradually fold in the beaten egg whites until well combined.

  2. Turn the mixture into a mold lined with banana slices.

  3. Serve cold, garnished with whipped cream.

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. Lemon + bananatop 16% of all pairs
    Smell alikemoderate
    Cooked together1,134 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

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

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

  3. Lemon + eggtop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  4. Sugar + bananatop 19% of all pairs
    Smell alikelow
    Cooked together3,102 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

  5. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Gelatine
Sets the mixture so it holds its shape when cold.
Banana pulp
Adds banana flavour and body to the mixture.
Egg whites
Whipped into the mixture to make it light and airy.
Sugar
Sweetens the mixture and balances the lemon's acidity.
Lemon juice
Adds acidity that brightens the banana flavour.

The step that matters

Beat the mixture over ice water until light and cold. The mixture must cool enough to thicken before the egg whites go in. If it is still warm or runny, the whites deflate and the foam collapses, so the cake loses its lightness.

Swap the banana

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

  1. Orangefits better
  2. Vanillafits better
  3. Limefits better
  4. Bananathe original

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