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 ↓
Swiss Roll
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Combine 4 eggs with ¾ cup fine sugar in a basin.
Beat over steam until stiff.
Gently stir in ¾ cup sifted flour.
Bake and roll
Pour the mixture into a flat tin lined with greased paper and spread it out.
Bake in a moderate oven at 350°F (175°C) for about 15 minutes until firm to the touch.
Turn the cake out onto a paper sprinkled with crushed sugar.
Wet the paper.
Remove the cake.
Spread jam over the cake and roll it up.
Cut off the ends and sprinkle sugar on top.
Serve cold.
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).
-
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
- Whipped to a stiff foam, they give the sponge its structure and lift.
- Fine sugar
- Sweetens the sponge and helps stabilise the whipped eggs.
- Sifted flour
- Provides the set structure that holds the rolled sponge together.
- Jam
- Adds sweetness and moisture to the filling inside the rolled sponge.
The step that matters
Beat over steam until stiff. Whipping eggs and sugar until stiff traps air that leavens the sponge. Under-beating gives a dense roll that cracks when rolled, and the flour must be folded in gently so that air is not lost.
“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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