3: After a few minutes the pastry will form. Stop the mixer as soon as possible to get an easy to work dough. There is no problem if there are still some small pieces of butter not completely mixed in.
7: Then flatten the ball into a cake. This will help when you come to out roll it out. Note that the more flatter it is at this stage, easier it will be later.
8: Wrap the pastry in the plastic film, and write on top what it is.
9: Repeat the operation until the end of dough, and put any pastry which you do not intend use within the next few days in the freezer.