Wipe out the skin surface with paper towel and pierce it again with bamboo skewer.
Preheat oven to 250 ° C with only top heater, or prepare the grill. Place meat skin up into the low position in the oven, and don't forget to place tray with water under the meat. Grill for few minutes. Usually, it is take between 5 and 15 minutes, until the skin begins to burn. At this time, the skin was completely cooked after 8 minutes.