Add the egg white and incorporate it by whisking again.
Add the vanilla and mix.
Add the salt, flour and cornstarch and mix in using a spatula.
Add a bit of food colouring, mix it in with the spatula and assess if you need more. A little goes a long way.
Transfer the dough into a piping bag fitted with a star nozzle, the opening of mine was ⅓ of an inch in diameter.
On a baking tray lined with baking paper or a silicone mat, form the wreaths using the piping bag, forming a circle. If the joint looks a bit shabby, you can gently press on it with your finger to shape it.
Sprinkle with sprinkles ;)
Bake in a preheated oven at 180°C/350°F for 10-12min or until dry but not golden.
Notes
Even though I added the equivalence in cups, I highly recommend that you use grams for all measurements. This recipe is very sensitive to small changes.