Why it works: Raspberry and currant work together. They rank in the top 10% of all ingredient pairs, and cooks put them together in 366 recipes. Both carry ethyl benzoate, which smells fruity, sweet. The science ↓
Sponge Cake Roly-poly
Ingredients
Directions
The book says “a fairly 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).
In a bowl, mix the eggs, fine wheat flour, and caster sugar as directed in the Sponge Cake recipe.
Line a large square baking tin with buttered paper and pour the mixture into it.
Bake and roll
Bake for 7 to 12 minutes, or until baked through.
Place a sheet of white kitchen paper on the kitchen table and sprinkle it with white sugar.
Turn the cake out of the tin onto the sugared paper, spread with raspberry and currant jam, and roll it up quickly.
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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Raspberry + curranttop 10% of all pairsSmell alikemoderateCooked together366 recipes
Shared aroma: ethyl benzoate (fruity, sweet).
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Wheat + flourtop 12% of all pairsSmell alikemoderateCooked together4,373 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Wheat + raspberrytop 15% of all pairsSmell alikemoderateCooked together50 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, 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
- Whisked eggs create the airy foam that gives the sponge its structure and lift.
- Fine wheat flour
- Flour sets the sponge's structure as the proteins and starch cook in the oven.
- Castor sugar
- Sugar stabilises the whisked egg foam and adds sweetness and gentle browning.
- Raspberry jam
- Jam adds sweetness, fruit flavour and moisture to the filling inside the rolled sponge.
- Currant jam
- Jam adds tart fruit flavour and moisture to the filling inside the rolled sponge.
The step that matters
Roll the cake while it is still warm. A freshly baked sponge is pliable; once it cools it becomes brittle and is likely to crack when rolled. Rolling it quickly on the sugared paper keeps it from sticking and tearing.
Swap the currant
How well each one fits the dish's main ingredients (egg, wheat, flour, sugar, raspberry):
- Vanillafits better
- Blueberryfits better
- Raisinfits better
- Currantthe original
Fit is the average pairing score against egg, wheat, flour, sugar, raspberry. 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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