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Dessert

Lemon Cream Sponge

A lemon-flavored sponge made with eggs, sugar, gelatin, and lemon juice, folded with beaten egg whites.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and gelatin are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,778 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Lemon Cream Sponge

Ingredients

Directions

Make the custard

  1. Beat the yolks of the eggs with 4 tablespoons of sugar.

  2. Add the juice and grated rind of the lemons and 2 tablespoons of hot water.

  3. Stir in the remaining sugar and place the mixture in a double boiler until it thickens like soft custard.

  4. Add the soaked gelatin just before removing from heat.

Set and serve

  1. Once cooled and beginning to set, fold in the stiffly beaten egg whites until smooth.

  2. Wet a mold with cold water and pour in the mixture.

  3. Serve with cream or soft custard, or mold with wine jelly.

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 + gelatintop 7% of all pairs
    Smell alikemoderate
    Cooked together2,778 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

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

  3. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

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

  4. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

  5. Lemon + gelatintop 27% of all pairs
    Smell alikelow
    Cooked together1,215 recipes

    Shared aroma: beta-pinene (pine, resin).

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

Eggs
Yolks thicken the custard base, and whites are folded in to lighten the set dessert.
Sugar
Sweetens the mixture and balances the sharpness of the lemon.
Lemons
Provide acidity and aroma from the juice and grated rind.
Gelatin
Sets the mixture so it holds its shape when molded.

The step that matters

Add the soaked gelatin just before removing from heat. Gelatin must be fully dissolved into the warm custard without boiling, since overheating weakens its setting power and the mixture may then fail to firm up when molded.

Swap the lemon

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

  1. Vanillafits better
  2. Raisinfits better
  3. Figfits about as well
  4. Lemonthe original

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