Yield: 8 servings
Mix oil, vinegar, water and marinade mix in shallow dish. Add beef; turn to coat. Cover dish and refrigerate about 4 hours to marinate. Preheat grill. Remove beef from marinade. Cover and grill for 15-20 minutes, basting with marinade every 5 minutes. Cut beef into thin slices. Serve in pita bread.
Please note that some ingredients and brands may not be available in every store.