Making sprinkles at home is surprisingly easy. You probably even have all the ingredients in your kitchen right now. It’s worth it too. Making sprinkles from scratch gives you the opportunity to flavor and color them exactly as you wish.
In a medium bowl, beat the egg white and water until frothy with an electric mixer, about 20 seconds. Then slowly beat in the powdered sugar until smooth.
Stir in the almond extract and a few drops of food coloring.
Line 3 rimmed baking sheets with parchment. Transfer the confectioners’ sugar mixture to a pastry bag fitted with a #4 pastry tip. Pipe the batter out into lines to cover all three sheets. Do not let the lines touch one another.
Let the sheets stand at room temperature, uncovered, until the lines are completely dry, about 12 hours.
Using the tip of a sharp paring knife, pick the lines off the parchment paper. The pieces will break off into long and short pieces. Once you’ve loosened the lines from the entire sheet, carefully break the sprinkles down even further with your fingers. Use immediately or store in an air-tight container for up to 2 weeks.