Why it works: Flour and almond are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 8,673 recipes. Both carry isobutyraldehyde, which smells malty, green. 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
Preheat the oven to 400°F (200°C).
Beat the yolks and sugar until creamy.
Beat the egg whites until stiff.
Mix the egg whites with the yolks and sugar.
Make the batter
Gradually sift in the flour and add the extract, stirring just to combine.
Pour the batter into buttered pans lined with paper, about 1 inch deep.
Sprinkle a little pulverized sugar on top.
Bake
Bake for 25 to 30 minutes, covering with paper if it gets too hot.
Check for doneness with a skewer; it should come 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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Flour + almondtop 5% of all pairsSmell alikemoderateCooked together8,673 recipes
Shared aroma: isobutyraldehyde (malty, green).
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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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Sugar + almondtop 18% of all pairsSmell alikemoderateCooked together15,679 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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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 and yolks provide the air and structure that lift the sponge.
- Sugar
- Sweetens the cake and helps stabilize the whipped egg foam.
- Flour
- Forms the set crumb structure once the batter bakes.
The step that matters
Folding in the flour. Sift the flour in gradually and stir only until combined. Overmixing knocks air out of the whipped egg foam, which leaves the sponge dense instead of light.
“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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