Combine in bowl, 1/2 cup of milk, 1 egg, and 2 tablespoons butter. Add grated rind and juice from 1/2 an orange, 1/2 cup of chopped apples (skin can be left on), and 1/2 teaspoon vanilla. Sift together 1 1/2 cups cake flour, 1/4 teaspoon salt, and 1 tablespoon baking powder. Stir in milk mixture with a spoon until blended. Drop batter by spoonfuls into 1/2 inch hot oil. Fry to a golden brown. Drain.