Khao SOI is a native of northern Thailand, originally called "ก๋วยเตี๋ยวฮ่อ" food like noodles in soup with spices. Spicy with side dishes include pickled cabbage, onion, red and condiments such as pepper fried oil, lime juice, fish sauce, sugar in traditional recipes used as a chicken or beef meat But at present many restaurants have to use pork instead. Some may add the seafood or tofu. This dish is often not available in Thai restaurant in foreign countries. It is common but in northern Thailand.