But, the easiest method is to simply place your roots, a few at a time, into a coffee grinder. Kava roots are fibrous, but the bark has been peeled off of them, and they’re actually pretty soft in relation to the world of roots. As long as you break up the roots before putting them in a coffee grinder, and as long as you only do a small amount at a time, you should be fine. Another great tool is a blender such as a Vitamix. I know that many Kava Bars use the Vitamix as their primary root-grinding tool. Again, in moderation, Kava roots easily grind up in a blender, and actually make for quite a strong Kava drink because of how thoroughly it powders the root.