Preparation Steps

• Preheat oven to 350°F (175°C). Sift together the flour and 1 cup of sugar.
• In a clean, grease-free bowl, beat egg whites with cream of tartar until soft peaks form. Gradually add the remaining sugar, beating until stiff, glossy peaks form.
• Gently fold in the flour mixture and vanilla extract until just combined. Do not overmix.
• Pour batter into an ungreased 10-inch tube pan. Bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean.
• Invert the pan immediately and let the cake cool completely upside down.