Beat the butter with the icing sugar and salt until frothy and slowly add the flour and knead a smooth dough. Chill the dough for 30 minutes.
Preheat the oven to 175 ° C.
Roll out the dough 1/2 cm thick and cut out circles or any shapes. Prick several times with a fork. Bake on the middle oven rack for about 5-8 minutes.