The Jing Xuan Chai Yao Workshop has been making fine ceramics in Jingdezhen City for over ten years. 25 skilled painters work on the pieces full time.
A Kaolin clay with high purity and fine texture is used. The pieces are thrown on a wheel or molded, then allowed to dry partially. At which point they are painted by hand with a cobalt pigment. A layer of glaze is then applied.
The pieces are then fired at 1300 degrees celsius. It's during this process that the cobalt pigment reacts with the glaze and takes a vivid blue color.
The porcelain lets light through and is very hard, it doesn't influence the taste of tea, just like glass.
