In a stand mixer, combine meringue powder, water, and half of sugar. Whip at high speed for 5 minutes.
Scrape sides of the bowl. Add flavoring (and food coloring, if desired). Gradually add rest of sugar and continue whipping at high speed for 5 minutes until meringue forms stiff peaks.
Spoon into pastry bag with a 1M tip and pipe onto parchment paper-lined baking tray.
Bake 45-60 minutes.
Recipe Notes
Baking time will vary depending on several factors; i.e. what type of cookie sheet you use, humidity in the air, etc. It's best to keep checking every 5 minutes once you reach 45 minutes.