To freeze dough, let the batch rise once, then punch it down and separate it into pieces, each large enough for one crust. Shape the pieces into balls, then flatten them into disks and wrap them separately in heavy plastic wrap or freezer bags. The dough will keep in the freezer up to four months. To thaw, place the dough in the refrigerator the night before you are going to use it, then let it warm completely to room temperature before shaping.