1In a medium bowl, mix the sugar, soy sauce, pepper, garlic, lemon grass, and sesame seeds. Place the meat in the dish, and stir to coat. Cover, and refrigerate for 4 hours.
2Preheat grill for high heat. Discard marinade, and thread meat onto skewers accordion style.
3Brush grill grate with oil, and discard marinade. Arrange skewers on the grill. Cook 5 minutes per side. Serve hot from skewers, or remove from skewers and serve on lettuce leaves. Garnish with cilantro, mint, basil, and sliced green onions.