Shirataki Yakisoba is stir-fried noodles using Shirataki noodles instead of regular Yakisoba noodles, but still having the usual Yakisoba flavorings.  Shirataki, also called Ito Konnyaku, is a form of Konnyaku which is a gelatinous food made from Konnyaku potatoes.  Shirataki is shaped like thin threads (ito), as opposed to regular Konnyaku, which is usually a slab or block form, and is often seen as one of the vegetables in Sukiyaki, the most famous Japanese hot pot dish.