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Dessert

Yellow Lemon Sponge

A lemon-flavored sponge cake made with eggs, sugar, gelatine, and lemon zest.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Yellow Lemon Sponge

Ingredients

Directions

Prepare the flavour

  1. Grate the lemon rinds into the sugar.

Make the mixture

  1. Cream the egg yolks and sugar together.

  2. Dissolve the gelatine in the water.

  3. Add the dissolved gelatine and lemon juice to the creamed yolks.

  4. Stir until nearly setting.

Finish and set

  1. Whip the egg whites until stiff.

  2. Fold the stiff egg whites into the mixture.

  3. When nearly set, pour the mixture into a wetted mold.

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

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

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

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

  3. Egg + sugartop 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

Eggs
Yolks enrich the base and whites, whipped stiff, give the dessert its light, airy structure.
Gelatine
Sets the mixture as it cools, giving it a firm, sliceable body.
Castor sugar
Sweetens the dish and, creamed with the yolks, helps trap air for lightness.
Lemons
Rind and juice add aroma and sharp acidity that balances the sweetness.

The step that matters

Pour the mixture when nearly set. If the gelatine has not begun to thicken, the mixture is too runny and the folded whites deflate and separate; if it has set too far, it will not pour evenly into the mold. Timing the pour around the nearly-set stage keeps the foam and the gel both intact.

Swap the lemon

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

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

Fit is the average pairing score against egg, sugar. 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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