Why it works: Egg and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 106,462 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Velvet 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 whites until stiff, reserving 3 for icing.
In a separate bowl, beat the yolks and sugar until creamy.
Gently fold in the beaten egg whites and flavoring.
Add the boiling water and mix well.
Sift the flour with baking powder and fold into the mixture.
Bake
Pour the batter into prepared cake pans and bake until golden.
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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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Egg and flour 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
- Beaten whites trap air for lift, while yolks add richness and a tender crumb.
- All-purpose flour
- Provides the starch and gluten structure that holds the sponge once baked.
- Baking powder
- Releases gas in the batter, helping the cake rise in the oven.
- Boiling water
- Adds moisture and helps the batter bake to a soft, light texture.
The step that matters
Gently fold in the beaten egg whites. The whites hold the air that lifts the sponge. Stirring vigorously knocks that air out, and the cake then bakes flat and dense.
“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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