3-1/2 cups sifted cake flour |
1/2 teaspoon baking powder |
1/4 teaspoon salt |
1 cup unsalted butter at room temperature |
1/2 cup vegetable shortening |
1-1/2 cups granulated sugar |
6 large eggs |
1 scant cup milk |
1 tablespoon grated lemon zest |
1 teaspoon vanilla extract |
1 teaspoon lemon extract |
powdered sugar for serving |