Prepare the marinade by combining tamarind paste, fish sauce, lime juice, minced garlic, and palm sugar
Add Thai chilies to the marinade for heat and flavor
Coat the pork belly thoroughly with the marinade
Let the pork belly marinate for several hours or overnight for best flavor
Grill or barbecue the marinated pork belly until cooked through and caramelized
Garnish with fresh cilantro before serving
