Kantha is a type of stitching that I first saw on the blog, Spirit Cloth written by Jude Hill. I've attempted it myself on a couple of my small art quilts. Rage and Black Cat both have my variation of kantha stitching on them. I had wanted to use kantha for Thou Shall Not Steal Pecans, but I had trouble with the batting bearding through to the front of the quilt. I used Mountain Mist 100% cotton batting in that quilt, which is a perfectly wonderful batting to hand quilt with traditional quilting thread. I apparently needed a batting with a scrim for kantha stitching on that particular fabric because it was a little more loosely woven than what I normally use. That's why I think the Warm and Natural batting will work for kantha and that wonderful hand dyed fabric by Marcia Derse. It has a thin scrim. I'm excited to think of the possibilities! I will let you know how it goes as soon as I know.
Kari, thank you for the kantha link.