Champagne Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease a 10-inch round cake pan.

Step 2
Sift flour, baking powder, and salt together in a medium bowl.

Step 3
Beat sugar and butter with an electric mixer in a large bowl until very light and fluffy. Mix in flour mixture alternately with Champagne.

Step 4
Beat egg whites in a glass, metal, or ceramic bowl until stiff peaks form.

Step 5
Fold 1/3 of the egg whites into cake batter to lighten it, then fold in remaining egg whites. Pour batter into prepared pan.

Step 6
Bake in the preheated oven until a toothpick inserted into the center comes out clean, 25 to 30 minutes.