Konjac is a root vegetable from the yam family. It's naturally gluten-free and vegan. Konjac is acceptable for Paleo, Keto, and Whole30 dieters. The root vegetable is high in satiating glucomannan fiber—helping you stay full and satisfied. You may have heard Konjac pasta referred to as shirataki or "shirataki noodles." The konjac plant is native to Asia, where people have enjoyed it for centuries, particularly in Japanese cuisine.