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Dessert

Lemon Sponge Cake

A light, airy cake flavored with lemon zest and juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Flour and sugar are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓

Lemon Sponge Cake

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Preheat the oven to 350°F (175°C).

  2. Sift the flour and baking powder together.

  3. Grate the yellow rind of the lemon.

Make the batter

  1. In a bowl, beat the sugar and egg yolks until creamy.

  2. Add the lemon zest and lemon juice, mixing until thick.

  3. In another bowl, beat the egg whites until stiff peaks form.

  4. Gently fold one-third of the flour into the yolk mixture.

  5. Fold in one-third of the egg whites.

  6. Fold in the remaining flour and egg whites. Mix lightly to avoid toughening the batter.

Bake

  1. Pour into a prepared pan and bake until a straw inserted comes out clean.

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. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  2. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + lemontop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

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

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

Flour and egg barely smell alike, yet cooks put them together in 106,462 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
Whipped whites add lift and airy structure, while yolks enrich the sponge and help it set.
All-purpose flour
Provides the starch and gluten that set the cake's structure as it bakes.
Granulated sugar
Whipped with the yolks to build a stable, creamy base and add sweetness and tenderness.
Baking powder
Releases gas during baking to help the cake rise.
Lemon zest
Adds bright lemon aroma from the oils in the rind.

The step that matters

Folding the egg whites into the batter. Whites hold air that gives the sponge its lift. Overmixing or deflating them with vigorous stirring makes the cake dense and tough, so fold gently and in stages.

Swap the lemon

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

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

Fit is the average pairing score against flour, 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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