My Lightest Vanilla Cake: A Cake Flour Recipe That Works!

Ingredients

• 2 1/4 cups (255g) cake flour, sifted
• 1 tsp (5g) baking powder
• 1/2 tsp (3g) baking soda
• 1/2 tsp (3g) salt
• 1 cup (2 sticks/226g) unsalted butter, softened
• 1 3/4 cups (350g) granulated sugar
• 2 large eggs (approximately 100g)
• 2 large egg whites (approximately 60g)
• 1 cup (240ml) buttermilk, room temperature
• 2 tsp (10ml) vanilla extract
• 1 cup (2 sticks/226g) unsalted butter, softened (for frosting, optional)
• 3 cups (360g) powdered sugar, sifted (for frosting, optional)
• 1/4 cup (60ml) heavy cream (for frosting, optional)
• 1 tsp (5ml) vanilla extract (for frosting, optional)