... have been made in China for centuries, are clay pots that are particularly good for infusing tea. ... hand crafted from clay from the village of Dingshu in the province of Jiangsu. The soft yellow clay contains iron, ... that insures a smooth, dense shell of clay. Afer it is dug, the clay is dried, punched into powder, ... potters use heavy wooden mallets to punch the clay, mixing it with water as they do so ...