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 gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 350°F (175°C).
Beat the egg whites until stiff, adding vinegar or lemon juice while beating.
Make the batter
In a separate bowl, mix the egg yolks and sugar until well combined.
Sift the flour and baking powder together, then gradually add to the yolk mixture.
Slowly incorporate the hot water, a few drops at a time, until smooth.
Gently fold in the beaten egg whites.
Bake
Pour the batter into a greased cake pan and bake for 40 minutes.
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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Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
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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).
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Vinegar + flourtop 27% of all pairsSmell alikemoderateCooked together8,652 recipes
Shared aroma: isobutyraldehyde (malty, 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
- Whites trap air for lift, and yolks add richness and structure to the crumb.
- Flour
- Provides the starch and gluten network that sets the cake's structure as it bakes.
- Sugar
- Sweetens the cake and helps create a tender crumb with browning.
- Baking powder
- Releases gas during baking, helping the cake rise and become light.
The step that matters
Folding in the beaten egg whites. Egg whites hold the air that lifts the cake. Folding gently keeps that air in; stirring vigorously deflates the foam and leaves a dense, flat sponge.
“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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