Why it works: Flour and milk 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 ↓
Puff 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.
Make the batter
Preheat the oven to 350°F (175°C).
In a bowl, mix sugar, flour, eggs, cold water, baking powder, and salt until smooth.
Pour the batter into sponge cake pans and bake until golden.
Make the filling
For the filling, combine milk, cornstarch, egg, and a pinch of salt in a saucepan.
Cook over medium heat, stirring until thickened like custard.
Assemble
Once the cakes are baked, split each cake open with a knife.
Fill the space with the custard filling, ensuring it doesn't spill out.
Optionally, ice with chocolate dressing for extra flavor.
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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Flour + milktop 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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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
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).
Flour and milk 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
- Bind the batter and, with the extra egg, thicken the custard filling.
- Flour
- Forms the structure of the cake crumb.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Cornstarch
- Thickens the milk into a set custard filling.
- Sugar
- Sweetens the cake and helps it brown.
The step that matters
Cooking the custard filling. Cornstarch thickens only when the mixture reaches a simmer and is stirred constantly. Stopping too early leaves the filling runny, while overheating can scorch the milk or curdle the egg.
“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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