Step 2 If icing is too thick, add a couple of drops of water. You can multiply this ratio as needed based on the size your cookie batch (3:1 will make enough icing to decorate around a dozen cookies, while 6:2 will make enough icing for around two dozen cookies). People use it for making Royal Icing, meringues, and other recipes that uses egg whites. Meringue Powder replaces the egg whites in Royal Icing, eliminating the risk of getting the yolk in your egg whites. Meringue Powder ingredients includes cornstarch, dried egg whites, sugar, and other ingredients. In a bowl, with mixer at medium speed, beat confectioners' sugar, meringue powder and warm water until stiff peaks form, about 5 to 7 minutes. Made with meringue powder it has a delicious taste and a smooth texture that’s perfect for flooding and piping cookies. This classic and simple royal icing recipe is a cookie decorating staple with a smooth consistency that sets quickly without hardening too much. This Royal Icing recipe is easily scalable; it’s based on a ratio of 3 parts sugar to 1 part meringue powder. Royal Icing with Meringue Powder Combine all ingredients together in mixing bowl. Beat on low speed with whip attachment until combined then increase speed to medium high and beat for 5 – 8 minutes, adding 2-3 tablespoons more warm water, as necessary. https://www.finecooking.com/recipe/royal-icing-with-meringue-powder