Piping Batter

By ctozzi

Ingredients

• 1 stick unsalted butter, cut into pieces, room temperature
• 1 cup confectioners' sugar, sifted
• 4 large egg whites, room temperature
• 1/4 teaspoon pure vanilla extract
• 3/4 cup plus 1 tablespoon all-purpose flour
• 1/3 cup unsweetened Dutch-process cocoa powder, sifted

Preparation

Step 1

Process butter and confectioners' sugar in a food processor until fluffy. While machine is running, gradually add egg whites and vanilla, and scrape down sides of bowl. Add flour, and process until combined.

Transfer to a bowl, and stir in cocoa powder with a rubber spatula. For piping, transfer to a pastry bag fitted with a 1/16-inch plain round tip (such as Ateco #2).