Name: Perfection Sponge Cake
Ingredients: 6 eggs; 2 cups all-purpose flour; 2 cups granulated sugar; 2 tablespoons water

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 ↓

Perfection Sponge Cake

Oven, in the book's wordsA hot oven

Ingredients

6 eggs
2 cups all-purpose flour
2 cups granulated sugar
2 tablespoons water

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure. The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare

Preheat the oven to 400°F (200°C).

Make the batter

In a bowl, beat the sugar and egg yolks together until well combined.
In a separate bowl, beat the egg whites until stiff peaks form.
Gently fold the beaten egg whites into the sugar and yolk mixture.
Stir in the flour just until combined.

Bake

Pour the batter into a loaf pan or spread it onto a baking sheet.
Bake for about 25-30 minutes or until golden and a toothpick comes out clean.

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.

Flour + sugartop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Egg + flourtop 15% of all pairs

Smell alikelow

Cooked together106,462 recipes

Shared aroma: isobutyraldehyde (malty, green).
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: Whipped whites trap air that lifts the cake, while yolks add richness and structure.
All-purpose flour: Provides the starch and gluten that set the cake's structure as it bakes.
Granulated sugar: Sweetens the cake and helps the beaten eggs hold a stable foam.

The step that matters

Folding in the egg whites. Overmixing or stirring vigorously deflates the whipped whites, removing the air that makes the cake rise. Fold gently and only until no white streaks remain.

“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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Perfection Sponge Cake