Chiang Rai Published caption : The northern food in Chiang Rai is second to none. Must-try dishes include khao soi (spicy noodle curry), sai ua (spicy pork sausages), khanom chin nam ngiao (rice vermicelli in slightly spicy pork soup with pig’s blood curd, pork ribs and dried ngiao flowers), nam prik ong (a chilli dip made from tomatoes, minced pork, dried chillies, garlic and shallots) and nam prik num (a spicy green chilli dip). Some famous local restaurants in the city are Khao Soi Pho Chai and Nam Ngiao Pa Suk.