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Dessert

Velvet Sponge Cake

A light sponge cake made with eggs, powdered sugar, flour, baking powder, and boiling water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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.

Make the batter

  1. Beat the eggs until light.

  2. Gradually mix in the powdered sugar.

  3. Add the ½ cup of flour.

  4. Sift the ⅓ cup of flour with the baking powder and mix in.

  5. Slowly add the boiling water, mixing gently.

Bake

  1. Pour the batter into a buttered tin.

  2. Bake at 350°F (175°C) until done.

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. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

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
Beaten until light, they trap air that gives the sponge its lift and open crumb.
Powdered sugar
Sweetens the batter and dissolves finely, helping it stay tender.
All-purpose flour
Provides the protein structure that sets the cake's crumb as it bakes.
Baking powder
Releases gas in the batter, helping the cake rise in the oven.
Boiling water
Adds moisture and loosens the batter, keeping the crumb soft after baking.

The step that matters

Slowly add the boiling water, mixing gently. Mixing gently keeps the air beaten into the eggs from collapsing. Overmixing after the flour develops gluten, making the cake tough and dense.

“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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