Ingredients Cooking spray 1 tablespoon stone-ground white cornmeal 2 cups sugar, divided 2/3 cup butter, softened 1 teaspoon grated lemon rind 1 teaspoon vanilla extract 5 large egg yolks 1 cup low-fat sour cream 2 cups all-purpose flour ½ cup stone-ground white cornmeal ½ cup stone-ground white or yellow grits ½ teaspoon salt ½ teaspoon baking soda 5 large egg whites Preparation Preheat oven to 325°. Coat a 10-inch tube pan with…