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 ↓
Jelly Roll
Ingredients
Directions
The book says “a moderate oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Beat the eggs until light.
Add the sugar and salt, stirring until dissolved.
Sift the flour and cream of tartar together twice, then add to the egg mixture and beat until light.
Dissolve the baking soda in hot water and add it to the mixture.
Bake and roll
Pour the batter into a flat pan and bake at 400°F (200°C) for 10 to 15 minutes.
Remove from the oven and place on a napkin.
Spread jelly on the underside and roll it up.
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 eggs trap air, giving the sponge its light, airy structure.
- All-purpose flour
- Forms the gluten-based structure that holds the sponge together when rolled.
- Sugar
- Adds sweetness and helps stabilise the beaten egg foam.
- Cream of tartar
- Acidifies the egg foam, helping it stay stable and hold its volume.
- Baking soda
- Reacts with the acid in the batter to release gas, helping it rise.
The step that matters
Beat the eggs until light. Air whipped into the eggs is the main source of lift in a sponge with no added fat. Under-beaten eggs produce a dense sponge that cracks when rolled. Folding gently after the flour is added keeps that air in the batter.
“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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