This recipe came to my e-mail inbox from , and I think it was originally from the January 2004 issue of Cooking Light. I usually substitute chicken for the lamb, which is also very good, but lamb is the traditional Greek meat to use. I only add tzatziki and tomatoes to my pita, but you can add anything you'd like. You can purchase store-bought tzatziki and pita bread, or I (and many others) have recipes for them on here as well. The pita bread in this recipe is meant to be rolled around the filling like a taco, not stuffed like a pocket (the taco way with pita bread is also more Greek, I believe, whereas the pita pocket way is more Lebanese or other regions). These are really easy, really good, and go well served with vegetable fritters or roasted vegetables.