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Dessert

To Make a Sponge Cake

A light cake made from eggs, sugar, flour, lemon rind, baked at 300°F.

From an old cookbook · modernised transcription
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Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

To Make a Sponge Cake

Oven, in the book's wordsA cool oven

Ingredients

Directions

The book says “a cool oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Preheat the oven to 300°F (150°C).

Make the batter

  1. In a bowl, break the eggs onto the sifted sugar and beat together with a steel fork for 30 minutes.

  2. Weigh the flour using the shells of 2 eggs and add it to the mixture.

  3. Grate in the lemon rind and stir to combine.

Bake

  1. Pour the batter into a tin lined with buttered paper.

  2. Immediately place the tin in the preheated oven.

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 + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Lemon + buttertop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

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

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter barely smell alike, yet cooks put them together in 124,287 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
Beaten with sugar to trap air, giving the cake its light, risen structure.
Loaf sugar
Sweetens the cake and helps the beaten eggs hold their foam.
Flour
Adds structure so the cake sets firm once the eggs have risen.
Lemon rind
Adds aroma and fresh citrus flavour to the cake.

The step that matters

Beating the eggs and sugar for 30 minutes. The long beating whips air into the eggs, and that air is the only rising agent in this batter. Under-beating leaves a dense cake, and the flour should be folded in gently so the foam is not knocked out.

Swap the lemon

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

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

Fit is the average pairing score against egg, sugar, flour, butter. 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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