This is FROSTING!!! WHAT?!?!? The site sells the dry frosting mix that you add to boiling water and mix into... MAGIC!!! They also sell the molds to make the lace awesomeness. This is the. coolest. thing. since..... anything!!!
You can color and flavor royal icing with jell-o! If you want to add flavor but don't like the extra sugar, use unsweetened drink mix (Kool Aid). The flavor infuses the frosting and swirling it in can give a marbled effect. Use this in plain white cake mix also....same results!