shirataki
[shee-rah-TAH-kee]
Thin, translucent, gelatinous noodles made from the starch of a yamlike tuber known as Devil's Tongue. Shirataki, which are the shredded form of KONNYAKU, have no discernable taste but absorb the dominant flavors of the soup or dish to which they're added. They can be found both in dry and soft forms in Asian markets and some supermarkets. The word shirataki means "white waterfall," alluding to the appearance of these noodles.

(from the Food Dictionary)

And here is a site of a Japanese food supplier/distributor (?) scroll down and you'l find some different packaging for the shirataki - with 0g of carbs per 1oz of noodles...

http://www.house-foods.com/our_prod...r_products.html