In a medium-sized bowl, combine the all-purpose flour, cornstarch, baking powder, salt, 1 teaspoon of cinnamon, and nutmeg. Set this mixture aside.
2 cups all-purpose flour, 1¼ teaspoons baking powder, ¾ teaspoon fine sea salt, 2 teaspoons ground cinnamon, ½ teaspoon freshly grated nutmeg, 2 teaspoons cornstarch