The traditional Yixing Teapots originated from China and their original shape dates from the 15th century. Made of clay, a material naturally found in the region of Yixing in eastern China, these teapots are particularly adapted for black, oolong and matured teas. During each infusion, the clay absorbs the flavour of the tea, developing a protective coating at the bottom of the teapot. To preserve this natural protection, the Yixing teapots should not be cleaned with soap or any detergent, only rinsed with fresh water after use. All TWG Tea Yixing Teapots come with a clay filter which allows the tea leaves to unfurl fully when infused and the full fragrance develop.