Royal icing is hard white icing often used for decorating. It can also be made soft by adding glycerin. The only difference between regular and a gluten free royal icing recipe are the brand you use to make it. I have included the brands that meet the guidelines for gluten-free labeling. Royal icing isn’t always easy to make because you need to reach the correct consistency for the best results. I have included some tips to make your job easier. The decorations made from this icing can keep for months. Enjoy and have fun! Royal icing is used to make decorations such as flowers and other designs for cakes. You can also use it directly on cookies. For cake decorations you pipe the designs onto parchment paper and allow them to harden. As any icing, they make edible decorations. When making hard decorations, omit the glycerin.