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 gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the batter
Preheat the oven to 400°F (200°C).
In a bowl, mix the eggs, castor sugar, baking powder, and flour until well combined.
Pour the mixture into a 14‑inch by 9‑inch baking tin.
Bake and roll
Bake for 20 minutes.
Turn the cake out onto a sheet of paper sprinkled with castor sugar.
Spread your choice of preserve over the cake and roll it up while warm.
Finish and serve
Once cooled, trim the ends and serve on a folded napkin.
Dust with a little castor sugar before serving.
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
- Whipped into the batter, they trap air and give the sponge its light, structure.
- Flour
- Provides the structure that holds the sponge together so it can be rolled.
- Castor sugar
- Sweetens the sponge and helps it brown and hold moisture.
- Baking powder
- Releases gas in the oven, helping the sponge rise and stay tender.
The step that matters
Roll the cake while warm. Rolling the sponge while it is still warm keeps it pliable; once cooled, it becomes stiff and is likely to crack.
“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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