This glaze was developed in China over 600 years ago. It was traditionally used on porcelain, to obtain bright colors over the white clay body. I have developed glaze recipes for a white stoneware clay, which often results in burgundy hues. I fire this glaze in natural gas kilns because it is very sensitive to levels of oxygen and gas in the kiln atmosphere, providing natural variations in color. I also enjoy adding drips of colorants to provide more surface movement and color contrast.