Feta-stuffed lamb burgers with minted-yogurt sauce

Instructions

1. In a large mixing bowl, mix together lamb, scallion, 2 tablespoons of minced garlic, fresh oregano, parsley, lemon zest, dried oregano, cumin and vinegar until thoroughly combined. Add feta and egg white; mix to combine. Shape lamb mixture into 4 patties; place on a plate and refrigerate until ready to cook.
2. To make yogurt sauce, place yogurt, mint and remaining tablespoon of garlic in a small bowl; stir to combine and set aside.
3. Heat an outdoor grill or a grill pan over medium-high heat. Add burgers and cook, covered, without moving, for 3 to 5 minutes. Uncover and flip burgers; cook on other side, uncovered, until barely pink in middle, about 3 to 5 minutes more. (Repeat with remaining burgers if they do not all fit on grill pan at once.)
4. To assemble burgers, make a large slit in each pita. Place a burger in each pita and fill each with 2 tablespoons of yogurt sauce and 1 slice each of onion, pepper and tomato. Yields 1 burger per serving.