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Dessert

Plain Sponge Cake

A light cake made with eggs, sugar, flour, boiling water, baking powder, lemon juice, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Sugar and flour 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 ↓

Plain Sponge Cake

Ingredients

Directions

Make the batter

  1. Beat the yolks with the granulated sugar.

  2. Gradually add 1 cup of flour.

  3. Fold in the beaten egg whites until stiff.

  4. Sift the remaining cup of flour with the baking powder and add it.

  5. Stir in the boiling water a little at a time.

  6. Add the lemon juice and salt.

Bake

  1. Bake in shallow tins.

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

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

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

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

Egg and flour 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 trap air, giving the sponge its light, open structure.
Flour
Forms the set crumb structure once the batter bakes.
Granulated sugar
Sweetens the cake and helps stabilise the beaten yolks.
Baking powder
Releases gas during baking so the cake rises.
Boiling water
Adds moisture and helps create a tender, soft crumb.

The step that matters

Fold in the beaten egg whites. Whites deflate easily when overmixed or stirred hard. Folding gently keeps the trapped air that gives the sponge its lift, so the cake stays light rather than dense.

Swap the lemon

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

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

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