Step 11: Engraving Technique
It is up to you what you write on the crust. I have chosen to write π = 3.14159 26535 89793 23846 26433 83279 50288 which is sensible in some way ... awkward way.
Before you start, make sure the crust is well baked and not soft, but crispy. (I would suggest that you make a biscuit from the dough to train on it, not on the π.)
Gently touch the surface of the crust with the tip. It will start burning slightly - move the tip slowly or make dots on the crust. It is easy when you get it!
NOTE: Some of the burned crust piles on the tip and you will have to change the foil. I changed it only once for the whole time.