whisk egg whites in stand mixer until frothy and bubble
add in cream of tartar
mix on medium until soft peaks form
gently add in sugar and whisk on high until the mixture does not feel gritty in between your fingers and stiff peaks form
scoop into piping bag and pipe out desired shape onto cookie sheet lined with parchment paper
bake at 200 for 1 hour (or as low as your oven will go with door open, if it gets too hot)
let cool on pan