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 ↓
Roll Jelly Cake
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°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.
Make the batter
Preheat the oven to 350°F (175°C).
Beat the egg yolks and sugar together until well combined.
In a separate bowl, beat the egg whites until stiff peaks form, then gently fold them into the yolk mixture.
Stir in the flour until just combined.
Pour the batter into two large baking sheets and spread evenly.
Bake and roll
Bake until golden brown, about 15-20 minutes.
While the cake is still hot, spread jelly over the surface.
Roll the cake tightly and wrap it in a towel until ready to serve.
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 whites trap air, giving the sponge its light, airy structure.
- Sugar
- Sweetens the batter and helps stabilize the beaten egg foam.
- Flour
- Provides the starch and gluten that set the crumb once baked.
- Jelly
- Adds sweetness and moisture to the filling between the rolled layers.
The step that matters
Rolling the cake while hot. A warm sponge is flexible, so it can be rolled without cracking. Once it cools, the structure stiffens and tends to crack along the roll.
“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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