Whip the butter with the sugar until the mixture is white and fluffy.
Next, add the vanilla, lemon zest, eggs and gradually the mixed and sifted flours.
After obtaining a homogeneous dough, with the help of a piping bag with a lined mouth and on baking paper, create the biscuits in a circular shape. Subsequently, place them in the freezer for at least 24 hours.
After the necessary time has elapsed, preheat the oven with the stone inside and, once hot, bake the biscuits on the stone.
Cooking:
170 ° C for 11 minutes
