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 ↓
Jelly 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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare the batter
Preheat the oven to 400°F (200°C).
In a bowl, beat the eggs and sugar until light and fluffy.
Sift together the flour, baking powder, and salt, then fold into the egg mixture.
Spread the batter thinly on a long baking sheet.
Bake and roll
Bake until lightly golden, about 10-12 minutes.
Remove from the oven and spread jelly over the hot cake.
Roll the cake up tightly while it's still 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 + 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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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 with sugar, they trap air that gives the sponge its light, airy structure.
- Sugar
- Whipped with the eggs, it helps stabilise the foam and adds sweetness and browning.
- Flour
- Provides the starch and gluten that set the thin sponge and let it roll without cracking too much.
- Baking powder
- Releases gas in the batter, helping the sponge rise and stay tender.
The step that matters
Roll the cake while it's still warm. Warm sponge is flexible, so it can be rolled tightly without cracking. Once it cools, the starches firm up and the cake becomes brittle and likely to crack.
“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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