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 or Baked Pancake
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 400°F (200°C).
Line a dish with oiled paper and sift powdered sugar inside.
Make the batter
Mix the powdered sugar with the beaten egg yolks.
Add the flour and the stiffly beaten egg whites, and mix gently.
Pour the batter into the dish and sift more sugar on top.
Bake and serve
Bake for about 7 minutes.
Spread jam over the baked pancake, roll it up, and serve sliced, hot or 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.
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + eggtop 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
- Egg whites
- Whipped into stiff foam that traps air, giving the sponge its light, rising structure.
- Egg yolks
- Add richness and moisture, and help bind the batter into a smooth, tender sponge.
- Flour
- Provides the starch and gluten that set the baked sponge and hold its shape for rolling.
- Powdered sugar
- Sweetens the sponge and helps create a fine, tender crumb with a delicate surface.
The step that matters
Folding in the stiffly beaten egg whites. Mixing too vigorously knocks out the air trapped in the whites, so the sponge bakes flat and dense. Gentle folding keeps the batter light, which lets the roll rise and stay flexible enough to roll without cracking.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 recipes