In a bowl add all of the ingredients with 5 tablespoons of water.
Using a mixer, paddle or whisk the ingredients until combined.
Scrape the bowl to be sure everything is combined.
Add an additional tablespoon of water, according to the fluidity you prefer for your royal icing.
Add coloring at this time if you wish.
Add sprinkles to cookies or cakes, before the icing sets.
Allow to dry at room temperature before handling, so they set and are dry to the touch. This will take about 5 minutes.