Soba noodles and konjac noodles are great alternatives to rice or brown rice noodles. If you're on a gluten-free diet, make sure the soba noodles are made from 100% buckwheat because some brands contain wheat flour. Konjac noodles are the famous gluten-free, 0-calorie noodles made from the konjac root. They have a relatively neutral taste (sometimes a fishy smell) and tend to be a little slimy. Always rinse them well before using them.