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Dessert

Velvet Sponge Cake

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

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 ↓

Velvet Sponge Cake

Oven, in the book's wordsA quick oven

Ingredients

Directions

The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Make the batter

  1. Beat the eggs until light.

  2. Add the sugar and beat again.

  3. Mix in the lemon flavoring and ½ cup of flour, then beat again.

  4. Sift the remaining ½ cup of flour with the baking powder, add to the mixture, and beat again.

  5. Stir in the boiling water and beat hard.

Bake

  1. Line a shallow bread pan with paraffin paper and pour in the mixture.

  2. Bake at 400°F (200°C) for 20 minutes.

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. 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
Beaten until light, they trap air that gives the sponge its structure and rise.
Flour
Provides the starch and protein that set the batter into a firm crumb as it bakes.
Sugar
Adds sweetness and helps stabilise the beaten eggs, keeping the foam from collapsing.
Baking powder
Releases gas in the batter, lifting the cake as it bakes.
Boiling water
Adds moisture and hydrates the flour, giving the batter a light, soft texture.

The step that matters

Beat the eggs until light. Beaten eggs trap air that gives the sponge its rise. Keep the foam full and beat the mixture well before adding the flour, since over-stirring after the flour goes in develops gluten and toughens the crumb.

Swap the lemon

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

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

Fit is the average pairing score against egg, flour, 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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