Flank Steak Pitas Recipe

In a small bowl, combine the first eight ingredients. Pour 1/4 cup marinade into a large resealable plastic bag; add the beef. Seal bag and turn to coat. Refrigerate for at least 8 hours or overnight. Cover and refrigerate remaining marinade. Drain and discard marinade. Grill beef, covered, over medium heat for 6-8 minutes on each side or until meat reaches desired doneness (for medium-rare, a thermometer should read 145 °; medium, 160 °; well-done, 170 °). Let stand for 10 minutes. Meanwhile, grill pitas, uncovered, over medium heat for 1-2 minutes on each side or until warm. Thinly slice beef across the grain. In a large bowl, toss the beef, lettuce and reserved marinade. Serve in pitas; sprinkle with sesame seeds.