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 ↓
Sponge Cake
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.
Prepare
Weigh 10 eggs and use an equal weight of very fine sugar.
Separate the yolks and whites of the eggs.
Make the batter
Beat the yolks with the flour until smooth.
In a separate bowl, beat the egg whites until stiff peaks form.
Gradually mix the beaten egg whites into the yolk and flour mixture.
Pour the batter into a prepared baking pan.
Bake
Bake in a 400°F (200°C) oven until golden and a toothpick comes out clean.
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.
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked 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 the yolks add richness and structure.
- All-purpose flour
- Its proteins set during baking to give the sponge its structure.
- Very fine sugar
- Adds sweetness and helps stabilize the whipped egg whites.
The step that matters
Gradually mixing the whites into the batter. The air trapped in the beaten whites is what makes the sponge rise. Mixing too roughly or too long deflates the foam, leading to a dense, flat cake.
“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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