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 ↓
Rolled Sponge 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.
Prepare the batter
Preheat the oven to 350°F (175°C).
Beat the eggs and sugar until light and fluffy.
Sift together the flour and baking powder, then fold into the egg mixture.
Add the water and mix gently until combined.
Pour the batter into a greased baking sheet and spread evenly.
Bake and roll
Bake for 12‑15 minutes or until golden and springy to the touch.
Remove from the oven and let cool slightly.
Spread jelly over the cake and roll it up carefully.
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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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and egg 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 and give the sponge its light, airy structure.
- Flour
- Forms the gluten network that gives the cake its set structure once baked.
- Sugar
- Whipped with the eggs to help hold air and adds sweetness and browning.
- Baking powder
- Releases gas in the batter during baking, helping the sponge rise.
The step that matters
Roll the cake while still warm. Once fully cooled, the sponge loses flexibility and tends to crack when rolled. Rolling it slightly warm, as the record's cooling step allows, keeps it pliable enough to curl without splitting.
“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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