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 ↓
Sponge Cake
Ingredients
Directions
The book says “a rather quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Beat the yolks of the eggs well with the sugar.
Whisk the whites of the eggs until stiff.
Mix the whites with the yolks, stirring just enough to combine.
Gradually sift in the flour mixed with baking powder.
Bake and cool
Line a cake tin with buttered paper and dust with flour.
Pour the mixture into the tin and bake in a preheated oven at 400°F (200°C) for 45 minutes.
Remove from the tin before it is completely cool and place on a wire rack to cool completely.
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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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and egg 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 and set on baking, giving the cake its structure and lift.
- All-purpose flour
- Its starch and gluten set as the cake bakes, forming the crumb structure.
- Castor sugar
- Sweetens the batter and helps stabilize the whipped yolk mixture.
- Baking powder
- Releases gas in the batter, helping the cake rise in the oven.
The step that matters
Mix the whites with the yolks. The air whipped into the egg whites is what makes the cake light. Stirring too hard or too long knocks that air out, so the cake bakes dense. Fold gently, only until no streaks of white 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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