Preparation Steps

• Preheat your oven to 350°F (175°C) and prepare an angel food cake pan. Do not grease the pan.
• In a medium bowl, whisk together cake flour and 1/2 cup of the granulated sugar. Set aside.
• In a large bowl, beat egg whites on medium speed until foamy. Add cream of tartar and salt, and continue beating until soft peaks form.
• Gradually add the remaining sugar and beat until stiff peaks form. Fold in vanilla extract and lemon zest.
• Gently fold the flour mixture into the egg whites in small batches, being careful not to deflate the batter.
• Pour the batter evenly into the prepared pan and bake for 35 minutes, or until the cake is golden brown and the top springs back when touched lightly.
• Invert the cake pan onto a bottle or cooling rack and let it cool completely before removing from the pan. Dust with powdered sugar before serving.