Classic Royal Icing
- 16 oz. (4 cups) confectioners’ sugar
- 2 Tbs. powdered egg whites or meringue powder plus 6 Tbs. warm water OR 3 large egg whites
- Food coloring (optional)
If using the powdered egg whites or meringue powder and warm water, combine them in the bowl of a stand mixer or in a large mixing bowl. Let stand, whisking frequently, until the powder is dissolved, about 5 minutes. If using fresh egg whites, just put them in the bowl. With the whisk attachment...