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 ↓
Sponge Roll
Ingredients
Directions
Make the sponge
Beat the eggs and sugar together for 5 minutes.
Stir in the self-raising flour.
Pour the mixture into a greased oblong tin.
Enclose the tin in a paper bag and cook for 10 minutes.
Roll and serve
Turn out the sponge, spread with heated jam, and roll it up immediately.
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 structure.
- Sugar
- Whisked with the eggs to help stabilise the foam and add sweetness.
- Self-raising flour
- Provides the starch that sets the sponge's structure as it bakes.
- Jam
- Adds sweetness, flavour and moisture inside the rolled sponge.
The step that matters
Rolling the sponge immediately. Rolling while the sponge is hot and still flexible prevents cracking. Once it cools, the sponge becomes brittle and is more likely to split.
“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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