Why it works: Milk and flour are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Roll Jelly Cake
Ingredients
Directions
The book says “a moderately hot oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Preheat the oven to 350°F (175°C).
Beat the egg yolks with the sugar and sweet milk.
Whip the egg whites until frothy and fold them into the yolk mixture.
Add the baking powder and flour, mixing until combined.
Pour the batter into a greased baking pan and bake until golden.
Roll and finish
While hot, remove the cake from the pan and place it on a cloth dampened with cold water.
Spread jelly over the cake and roll it up quickly.
Sprinkle with powdered 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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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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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 + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Milk and flour barely smell alike, yet cooks put them together in 78,219 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 whites give the sponge its lift and airy structure, while yolks add richness and set the crumb.
- Sugar
- Sweetens the batter and helps trap air during beating, giving a tender, stable crumb.
- Flour
- Provides the starch and gluten framework that sets the cake's structure as it bakes.
- Baking powder
- Releases gas in the batter to make the sponge rise and stay light.
- Jelly
- Adds sweetness and moisture, and a fruity flavour contrast inside the rolled cake.
The step that matters
Rolling the cake while hot. A warm sponge is flexible; once it cools the starch sets and the cake cracks when rolled. Rolling it quickly over a damp cloth keeps the surface supple and prevents sticking and 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.
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