In the mixing bowl, add sifted powdered sugar and meringue powder.
Using a whisk or spatula, mix the mixture for a few seconds.
Add water and beat on low speed for 5-7 minutes. Icing will be lighter in color. Check the consistency of the icing. If the icing is too stiff, add more water, one teaspoon at a time. If the icing is too thin, add powdered sugar.
Transfer part of the icing into small and add food coloring.
Mix with the spatula and transfer into a piping bag.
Video
Notes
How to store: store royal icing in an airtight container at room temperature for up to two weeks.