Meringue cookies can be frozen for up to 6 months. They can also be stored for approximately 2 days at room temperature, if kept in an air tight container. When storing, the cookies should be separated with wax or parchment paper.
Meringue cookies are created by using egg whites mixed with a small amount of cream of tartar and sugar, then baked at a low temperature for about 90 minutes. The cookies are airy and light and can be flavored in a variety of ways. One medium sized meringue cookie contains approximately 79 calories. This serving size also includes an average of 0.02 grams of fat and 19.34 grams of carbohydrates.