Why it works: Sugar and chocolate are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 15,404 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Sponge Cake
Ingredients
Directions
The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.
Make the sugar and egg whites
Boil the sugar until it resembles wax when dropped into water.
Pour the hot sugar over the beaten egg whites and beat well.
Finish the batter
Once mixed, add the beaten egg yolks, then the flour and flavoring.
Do not heat the mixture after adding the flour.
Bake and ice
If baking in a loaf, bake in a 300°F (150°C) oven for one hour.
For layers, bake in two pans, then spread with marshmallow icing and melted chocolate.
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 + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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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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Flour + chocolatetop 18% of all pairsSmell alikelowCooked together8,994 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
- Egg whites
- Beaten whites trap air, giving the cake its light, airy structure.
- Granulated sugar
- Cooked into a syrup that sweetens the cake and helps stabilize the beaten whites.
- All-purpose flour
- Sets the cake's structure once the batter is baked.
The step that matters
Boil the sugar to the wax stage. Sugar cooked to the right point forms a syrup that, poured into the beaten whites, holds a stable foam. Undercooked sugar leaves the foam weak, and overcooked sugar turns bitter and hardens, so the whites may not set properly.
“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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