Mix the butter, eggs and sugar together well, then gradually stir in the flour and milk. Finally stir in the staghorn salt, it is very important that it happens at the end, as the staghorn salt starts to drift immediately.
Put the dough on a greased baking sheet and bake at 180 ° C for about 25 minutes until the dough has turned golden yellow.
When the cake has cooled down a bit, you can coat it with chocolate or icing. Then cut into small diamonds.