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 ↓
Sponge 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
Preheat the oven to 350°F (175°C).
Make the batter
Beat the egg yolks until creamy, then gradually add the powdered sugar, beating for 5 to 10 minutes.
Stir in the milk or water, salt, and flavoring.
Gently fold in part of the beaten egg whites.
Sift the baking powder with the flour, then gradually mix it into the batter, stirring slowly.
Finally, fold in the remaining egg whites.
Fill the tins
Line the cake tins with buttered paper and fill them two-thirds full.
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
- Whites trap air for lift, and yolks add richness and structure to the crumb.
- Powdered sugar
- Sweetens the batter and, when beaten with the yolks, helps create a fine, soft texture.
- All-purpose flour
- Provides the starch and gluten network that gives the cake its structure.
- Baking powder
- Releases gas in the batter, helping the cake rise and become light.
- Milk or water
- Adds moisture, which keeps the crumb tender and helps the batter blend smoothly.
The step that matters
Fold in the egg whites gently. The whites hold air that makes the sponge rise. Stirring hard or too long knocks that air out, so the cake bakes up dense 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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