Name: Champagne Cake Roll
Prep time: 30 min
Cook time: 15 min
Total time: 4 h 10 min
Yield: 10-12 slices
Ingredients: 1 cup (240ml) champagne*; 1 cup (110g) sifted cake flour*; 1 teaspoon baking powder; 1/2 teaspoon salt; 4 large eggs, at room temperature and separated; 3/4 cup (150g) granulated sugar, divided; 1 teaspoon pure vanilla extract; 1 cup (120g) confectioners' sugar, plus extra for topping; optional: 1 Tablespoon unsweetened natural or dutch-process cocoa powder; 1 and 1/2 cups (360ml) heavy cream; 1/3 cup (40g) confectioners' sugar; 1 Tablespoon reduced champagne (from step 1); 1/2 teaspoon pure vanilla extract