Fettuccine Shaped Shirataki, or white waterfall pasta has been enjoyed as a health food in Asia for over 1000 years. Made from the root of the konjac plant (sometimes called a Konnyaku potato), shirataki is composed of soluble fiber (glucomannan) which provides a slightly firmer texture than wheat pasta and significantly less calories and carbohydrates. Dieters also tout that shirataki pasta helps to keep you feeling full longer.