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Dessert

Velvet Sponge Cake

A light, airy cake made with eggs, sugar, flour, baking powder, boiling water, and lemon extract, topped with powdered sugar icing.

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 ↓

Velvet 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 the batter

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

  2. In a bowl, beat the egg yolks lightly, then add the sugar and beat for 15 minutes.

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

  4. Add the boiling water to the yolk and sugar mixture, then gradually fold in the flour and baking powder.

  5. Gently fold in the beaten egg whites and lemon extract.

Bake and ice

  1. Pour the batter into three greased cake pans and bake for 25-30 minutes.

  2. For the icing, beat the egg whites until stiff, then gradually add the powdered sugar and lemon extract to taste.

  3. Spread the icing between the layers of the cooled cake.

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, airy structure.
Flour
Provides the set structure that holds the risen sponge together as it bakes.
Baking powder
Releases gas in the oven, helping the batter rise.
Sugar
Sweetens the batter and, when beaten with yolks, helps build a fine, tender crumb.

The step that matters

Folding in the beaten egg whites. Whites hold air only while they are stiff. Folding gently keeps that air in the batter; stirring vigorously deflates it and yields a dense cake.

Swap the lemon

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

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

Fit is the average pairing score against sugar, egg, 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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