Greek Turkey Burger – – turkey (ground ), onion (grated (use a typical cheese grater and grate into a bowl to capture the onion juice)), oregano, garlic powder, salt, black pepper, pita bread, Romaine lettuce, tomato (sliced), red onion (sliced), cheese (feta, crumbled into bite-size chunks), Kalamata olives, Tzatziki (see recipe index), Place the ground turkey in a mixing bowl. Add the grated onion, oregano, garlic powder, salt and pepper and mix with the ground meat completely. Form 4 patties.; Heat a gas or charcoal grill. Cook the patties to complete doneness. Just before the patties are cooked, place the Greek pitas on the grill to warm.; Prepare the other ingredients on serving plates.; Assemble the burgers with ample portions of each ingredient.; –