Why it works: Flour and sugar 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 ↓
Swiss Roll
Ingredients
Directions
The book says “a rather quick 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 and sugar until creamy.
Gradually add the flour and mix lightly.
Pour into a baking tin lined with greased paper.
Bake and roll
Bake in a 400°F (200°C) oven for about 10 minutes.
Quickly turn it out onto a piece of paper sprinkled with sugar.
Spread the jam 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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Flour + sugartop 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
- Beaten to trap air, which gives the sponge its light, airy structure.
- Coombs' flour
- Sets during baking to form the cake's structure, holding the sponge together.
- Castor sugar
- Helps stabilise the beaten eggs and adds sweetness and a tender crumb.
- Jam
- Adds sweetness and fruity flavour, and moisture inside the rolled sponge.
The step that matters
Turning out the sponge while hot. A baked sponge becomes brittle as it cools and will crack when rolled. Turning it out quickly onto sugared paper while still warm lets it bend without breaking, and the paper keeps it from sticking.
“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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