Haw Muslim traders from the south of China probably brought this dish to Chiang Mai (in northern Thailand). This version is based on one in David Thompson's authoritative book, Thai Food, and is posted in response to a request in the Asian Forum. Thompson says, 'The best noodles to use are the somewhat flat egg noodles, about 1/2-centimetre (1/4-inch) wide. Deep fry a few of them in very hot, clean oil to use as a garnish, but be careful -- they splatter as they expand and become crisp.' He also says that beef can be used in place of chicken. Preparation and cooking times are guesses. Recipe #269411 is supposed to be a nice complement to this.