MeringuePowder: HowtoUseIt.Usingmeringuepowderinyour icing has plenty of perks: Long shelf life: Unlike fresh eggs, meringuepowder can be stored for up to two years. Safe touse: Because it’s pasteurized, there’s no risk of harmful bacteria inyour icing. Meringuepowder is a dried substitute for egg whites used in baking and creating decorations like royal icing and stabilizing frostings.How Do You UseIt. Whatis a Substitute for MeringuePowder? How do you usemeringue? Vanilla Meringue Cookie on a white marble. Taste of Home.Meringue should be made as close to when you’re ready touseit as possible. That means whipping egg whites while your pie crust is baking in the oven so it’s ready for topping. This royal icing recipeusingmeringuepowderand you can color or flavor it anyway you want. Royal icing creates a smooth, even surface for cookie decorating. My favoriterecipe includes lemon juice, meringuepowderand no corn syrup, so that’s what I teach on! I have some experience with using vanilla extract in my recipe, but other than that I’m not able to give advice on other types of recipes. MeringuepowderMeringuepowder is an ingredient that you won’t see called for in recipes very often, but you will see if you browse the aisles of a baking supply store or a craft store with a cake decorating section.How interesting. I never knew you could useitin angel food cake. Learn what meringuepowder is, howit’s used, andhowit can lead to more meringue success than traditional egg whites.