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 or Layer
Ingredients
Directions
Make the sponge
Beat the eggs and sugar together for 30 minutes.
Sift in the flour and baking powder, then add the water.
Bake in a large tin until golden.
Fill and finish
Spread jelly on the hot cake and roll it up.
Alternatively, bake in jelly tins and spread with jelly.
Cover with boiled icing.
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
- Whisked with sugar to trap air, giving the sponge its light, airy structure.
- Sugar
- Beaten with the eggs to help build volume and add sweetness and browning.
- Flour
- Forms the structure of the sponge once baked, setting it as it cooks.
- Baking powder
- Releases gas in the batter, helping the cake rise in the oven.
- Jelly
- Adds sweetness and moisture between the layers or rolls of the cake.
The step that matters
Beat the eggs and sugar together for 30 minutes. This long beating traps air in the eggs, which is what lifts the sponge. Under-beaten batter bakes flat and dense, so the air must be fully built before the flour is folded in.
“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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