Why it works: Lemon and raspberry are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 1,109 recipes. Both carry alpha-pinene, which smells pine, turpentine. The science ↓
Swiss Roll
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 the eggs and batter
Separate the yolks and whites of the eggs.
Beat each for nearly 20 minutes.
Mix the sugar with the yolks for a few more minutes.
Gently fold in the beaten egg whites.
Work in the flour, volatile salts, and essence of lemon to create a light, creamy batter.
Bake the sponge
Line a cake tin with tissue paper.
Pour the batter into the tin.
Spread the batter evenly.
Bake in a hot oven at 400°F (200°C) for about 5 minutes.
Roll and finish
Turn the cake onto another sheet of paper.
Remove the tissue paper.
Spread raspberry jam over the cake.
Roll the cake up using the paper to assist.
Cut the roll in half.
Dust the top with powdered sugar.
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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Lemon + raspberrytop 8% of all pairsSmell alikemoderateCooked together1,109 recipes
Shared aroma: alpha-pinene (pine, turpentine).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and egg 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 whites trap air, giving the sponge its light, airy structure.
- Flour
- Provides the starch and structure that hold the sponge together once baked.
- Castor sugar
- Sweetens the sponge and helps the yolks whip into a stable, smooth batter.
- Volatile salts
- Releases gas in the heat, helping the sponge rise and stay light.
- Raspberry jam
- Adds sweetness and moisture to the filling and keeps the roll from drying out.
The step that matters
Gently fold in the beaten egg whites. Folding gently keeps the air bubbles in the whites intact. Stirring vigorously deflates them, which leaves the sponge dense and flat instead of light.
Swap the raspberry
How well each one fits the dish's main ingredients (flour, sugar, egg, lemon):
- Raisinfits better
- Vanillafits better
- Orangefits better
- Raspberrythe original
Fit is the average pairing score against flour, sugar, egg, lemon. Candidates are from the same food group and used in at least 100 recipes.
“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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