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Dessert

Banana Sponge

A banana sponge made with gelatin, sugar, eggs, lemon juice, and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Banana and lemon 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

Prepare

  1. Soak the gelatine in ½ cup water.

  2. Press enough bananas through a ricer to fill 1 cup.

Make the mousse

  1. In a saucepan, combine the banana pulp, lemon juice, and sugar; cook over medium heat until boiling.

  2. Add the soaked gelatine and stir until dissolved; let cool.

  3. When it begins to set, fold in the beaten egg whites.

Set and serve

  1. Once cold enough to hold its shape, turn out into a glass dish and decorate with whipped cream or finely chopped nuts.

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. Banana + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together1,134 recipes

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

  2. Lemon + sugartop 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. Banana + sugartop 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).

Lemon and sugar 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 banana mixture into a firm, sliceable structure as it cools.
Mashed bananas
Provide the main banana flavour and body of the dessert.
Sugar
Sweetens the banana pulp and balances the lemon's acidity.
Eggs
Beaten whites fold in to add air, lightening the texture as the mixture sets.
Lemon juice
Adds acidity that brightens banana flavour and keeps it from tasting flat.

The step that matters

Fold in the egg whites when the mixture begins to set. If the gelatine mixture is too warm, folded egg whites collapse and deflate; if it is already firm, they won't blend in evenly. Wait until it just thickens so the whites hold their air and distribute smoothly.

Swap the banana

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

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

Fit is the average pairing score against lemon, sugar, 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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