Royal Icing:
4½ c. confectioner's sugar
2 Tb. dried egg-white powder (I prefer this over raw egg whites)
6 Tb. warm water
1. In a mixing bowl, using a hand-held electric mixer, beat the sugar, egg-white powder and water until well-combined.
2. Increase the speed to high and keep mixing until it's shiny, stiff and thick enough to pipe in a pastry bag. (The icing can be prepared up to 2 days ahead and stored in an airtight container in the refrigerator. Be sure to put a damp paper towel over the mixture before sealing it.)
3. Add food coloring, if desired.
4. When ready to use, load up your pastry bag(s) and get creative!