Cake/Mile-High Coconut Layer Cake recipe - from the The Sexton Family Cookbook Family Cookbook

Ingredients

• For the Cake:
• 4 cups cake flour
• 1 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1 cup butter
• 3 cups sugar
• 1 tablespoon real vanilla extract
• 2 cups buttermilk
• 6 egg whites
• For the Frosting:
• 2 cups sugar
• 1 cup water
• 1/3 teaspoon white vinegar
• 1/2 teaspoon salt
• 3 egg whites
• 1/2 teaspoon vanilla
• 14oz bag coconut
• For the Filling:
• 1/4 cup butter
• 1/2 cup sugar
• 4 eggs, beaten
• 1 cup orange juice
• 2 tablespoons orange zest
• 2 teaspoons orange flavoring