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 slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Beat the yolks until thick and light, gradually adding sugar while continuing to beat.
Add hot water and vinegar to the yolk mixture.
In a separate bowl, add salt to the egg whites and beat until very stiff.
Sift the flour with baking powder three times.
Fold the flavoring, flour, and beaten whites into the yolk mixture alternately and gently.
Bake and cool
Bake in a slow oven at 300°F (150°C) for about 30 minutes until well risen.
Invert to cool, then remove from the pan.
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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Sugar + vinegartop 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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Lemon + flourtop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 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
- Whites trap air when beaten, giving the cake its light, risen structure; yolks add richness.
- Flour
- Forms the gluten-based structure that holds the risen crumb once baked.
- Sugar
- Sweetens the cake and helps stabilise the beaten yolks for a thick, light mixture.
- Baking powder
- Releases gas in the batter, helping the cake rise in the oven.
The step that matters
Folding the beaten whites into the yolk mixture. Beaten egg whites hold the air that lifts the cake. Folding gently and alternately with the flour keeps that air from collapsing, so the cake rises well instead of turning dense.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, flour, vinegar):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Lemonthe original
Fit is the average pairing score against egg, sugar, flour, vinegar. 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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