Preparation 1. Wash pork collar, pat dry and cut into 2 inches width, 3 mm. thick. 2. Peel garlic, wash dirt, cut into small pieces and well pound with whole peppercorn. 3. In a mixing bowl, mix cut pork with pounded garlic and pepper. Then, season with thin soy sauce, seasoning soy sauce, palm sugar, and 3 Tbsp Cooking oil . Mix all ingredients thoroughly, refrigerate, and allow to marinate for 3 hours or overnight. 4. After marinated time, thread 3-4 pieces of pork onto a bamboo skewer. (Place 8 inches long bamboo skewers in enough water to cover for at least 30 minutes.) Meanwhile, turn on oven at 350° F. 5. Place the skewers on grill rack, brush remaining Cooking oil all over each pork skewer on put in a oven. 6. Grill in the oven for 15 minutes, turn the skewers over, brush Cooking oil again and continue grilling about 15 minutes. Turn the skewers over, brush with Cooking oil and continue grilling about 5 minutes or until the pork is browned on all sides, remove from oven. 7. Place the skewers on a plate and serve with steamed glutinous rice.