Chef TJ is committed to bringing you a taste of Thai street food to your door. Sai ua or northern Thai sausage or Chiang Mai sausage is a grilled pork sausage from northern Thailand and northeastern Burma. In Thailand, it is a standard food of the northern provinces and it has become very popular in the rest of Thailand as well. Its name in Thai comes from sai and from ua. Popular as street food, this sausage packs a little heat with a lot flavor!