Silver Cake with Pink Frosting from The Vintage Baker: More Than 50 Recipes from Butterscotch Pecan

Ingredients

• 2 tsp baking powder
• 2¼ cups [270 g] cake flour, sifted
• 1 tsp table salt
• ½ tsp baking soda
• ¼ cup [55 g] unsalted butter, at room temperature
• ½ cup [90 g] vegetable shortening
• 1½ cups [300 g] granulated sugar
• 2 tsp pure vanilla extract
• 4 egg whites, stiffly beaten
• 1 cup [240 ml] ice water
• 4 tsp pure vanilla extract
• ⅔ cup [160 ml] whole milk or heavy cream
• Pink sanding sugar for decorating
• Red food coloring, optional (but so pretty)
• ½ tsp table salt
• 1½ cups [330 g] unsalted butter, at room temperature
• 6 cups [720 g] confectioners’ sugar, sifted