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.
Make the batter
Beat the yolks of the eggs with the powdered sugar.
Beat the egg whites to a stiff, dry froth and add to the yolk mixture.
Stir in the pastry flour quickly and gently.
Bake and roll
Bake in a shallow pan at 400°F (200°C) for 20 minutes.
While warm, cut off the edges and spread jelly over the cake.
Roll the cake up and wrap it in a towel.
Place in a cool place until ready to serve.
Cut into slices with a sharp knife.
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
- Whites trap air for lift and structure; yolks add richness and moisture to the sponge.
- Powdered sugar
- Sweetens the batter and dissolves easily into the yolks for a smooth base.
- Pastry flour
- Provides a light, tender structure that holds the rolled sponge together.
- Jelly of your choice
- Adds sweetness and moisture as the filling inside the rolled cake.
The step that matters
Stir in the pastry flour quickly and gently. Folding gently keeps the whipped egg whites from deflating. Overmixing develops gluten and knocks out air, leaving a dense, tough sponge that cracks 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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