Yam flour, huh? I might have to recommend this to my paleo friends. They're (and me, when I eat over) stuck eating spaghetti squash, which is just a very different spaghetti experience.
Edit: Just looked this stuff up. It's not made from yams (tubers), but from something that maybe resembled a yam enough to name it after one. It's got no calories, but is high in soluable fiber - the stuff with more carbs is made with tofu, which is evil [read: soy].
http://en.wikipedia.org/wiki/Shirataki_noodles
