The pitas that are getting increasingly delicious are based on this recipe. Suspiciously similar to this one from Julia Child. I tried to use some of my old dough, frozen and thawed, but I guess it's dead or something. I also used 100% whole wheat flour. And I didn't clean the bowl out in-between, which is what the recipe recommends. What I think makes the pitas taste so good, in addition to eating them fresh is that the dough is fermenting a little in the fridge: I made the dough on Sunday, and I'm taking out a piece each morning to bake.