Konjac/shirataki noodles are gelatinous noodles made from konjac. The noodles and rice are marketed as low-carb (or no-carb) ingredients because their carb content is so low, the net carbs for a serving is zero. The theory is that those few carbs are fiber-rich and pass through your body without being absorbed.
Konjac, also known as elephant yam, is a plant commonly grown in Asia. The starch-like corm (kind of like a tulip bulb) of the plant is used to make food like noodles and rice. It contains glucomannan, which is a water-soluble dietary fiber and is sometimes used as a weight-loss supplement.
