A great idea, but not easy! And nothing for a hurry! Only you should carefully consider an appropriate text, and then use the letters with a steady hand mirror. And then invert the template with patience and spit with the wobbly letters on the actual wooden temple.
The special supplied batter recipe is extremely delicious (similar to shortbread), but after many tests I can only recommend: stamp Immediately after baking. Then the dough is not yet fixed, and you can read the writing good.
