Yixing clay teapots, known as Zi Sha Hu in China or "purple clay" teapots, are perhaps the most famous teapots for preparing Chinese tea. They are named after a small town located in Jiangsu province, where a specific iron mineral compound causes the unique coloring of these teapots. They were fired without glaze and used to prepare specific types of Oolong tea. Capacity of the traditional Yixing clay teapot: 250ml A Zisha teapot needs to be seasoned before use and then improved daily. In addition to simple daily use, it is necessary to rinse and constantly dry it with a soft cloth or with a tea brush. Due to the porous nature of the clay, the teapot should be gradually tempered by using it to brew one type of tea.