The stoneware clay bodys I use is of the highest quality. I use three different types of clay (currently). I mix my own body which is a slight modification from an old standby by a potter called Jeff Zamek (most potters know who that is) and I also use two clay bodies as per Standard Ceramics. One is their clay body #378, which is a dark brown clay and the other is their #192 which has been around for a long long time. I fire between cone 6 and 10 and usually at cone 8, in oxidation, and I make all the glazes here in the shop unless otherwise noted on the description.