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 ↓
Railroad Cake
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the batter
Preheat the oven to 350°F (175°C).
In a bowl, beat the sugar and eggs together until light and fluffy.
Sift in the flour and baking powder, and mix until just combined.
Spread the batter very thinly on a large baking pan.
Bake and roll
Bake until done, then turn out onto a towel.
Spread with jelly and roll tightly.
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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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 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
- Whipped with sugar to trap air, giving the thin sponge its light structure.
- Flour
- Provides the starch and gluten framework that sets the sponge so it can be rolled.
- Baking powder
- Releases gas in the oven, helping the thin batter rise and stay tender.
- Sugar
- Sweetens the sponge and, when beaten with eggs, helps create a light, airy texture.
- Jelly
- Adds moisture and sweetness to the filling inside the rolled sponge.
The step that matters
Spread with jelly and roll tightly. The cake is baked thin and must still be warm and pliable when turned out. Rolling it too late can cause cracking, so it should be rolled while soft.
“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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