I made this piece on the pottery wheel using stoneware clay. It was dipped in a wood ash glaze called a Nuka glaze, then I brushed iron and cobalt stains onto the glaze to create colored accents. Lastly, it was fired to about 2300 degrees F. in a natural gas kiln. It is 100% functional, dishwasher safe and microwaveable. Height 3.5", width 5" including handle.