Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓
Sponge-cake Roll
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 400°F (200°C).
Beat the egg whites and yolks separately.
Combine the sugar and flour, then mix in the cream of tartar.
Make and bake the cake
Add the dissolved baking soda to the mixture.
Fold in the beaten egg whites gently.
Pour the batter into a biscuit pan and bake quickly.
Once baked, turn the cake out onto a damp cloth.
Roll
Spread a layer of dressing over the surface and roll up the cake while warm.
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 + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, 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 + creamtop 20% of all pairsSmell alikemoderateCooked together30,481 recipes
Shared aroma: acetaldehyde (pungent, ethereal).
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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
- Beaten whites trap air that gives the sponge its light, open structure.
- Flour
- Provides structure, which sets as the cake bakes.
- Sugar
- Sweetens the cake and helps keep the crumb tender.
- Cream of tartar
- Acid that stabilises beaten egg whites and reacts with baking soda to help the cake rise.
- Baking soda
- Reacts with the acidic cream of tartar to release gas that lifts the batter.
The step that matters
Fold in the beaten egg whites gently. The whites hold the air that makes the sponge rise. Stirring vigorously deflates the foam, leaving a dense, flat cake that may crack when rolled.
“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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