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 ↓
Sponge Cake
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure. The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Preheat the oven to 400°F (200°C).
In a separate bowl, combine the flour and baking powder, then sift them together.
Make the batter
Beat the eggs until frothy, then gradually add the sugar.
Mix in the salt and milk.
Gently fold the dry ingredients into the egg mixture.
Bake
Pour the batter into a greased baking pan and bake for about 25-30 minutes.
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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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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Milk + eggtop 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
- Trap air when beaten, giving the cake its light structure as they set in the oven.
- All-purpose flour
- Forms the gluten network and starch that set the cake's structure as it bakes.
- Sugar
- Sweetens the cake and helps hold air in the beaten eggs for a tender crumb.
- Baking powder
- Releases gas during baking so the batter rises and becomes airy.
- Milk
- Adds moisture and helps the batter reach a smooth, pourable consistency.
The step that matters
Gently fold the dry ingredients into the egg mixture. Vigorous stirring knocks out the air beaten into the eggs and overdevelops gluten in the flour, which makes the cake dense and tough instead of light.
“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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