Old Dutch Cast Iron Chubu Teapot, 18-Ounce, Matte Black The heat-retaining properties of cast iron allow our tetsubin teapots to keep tea at the proper serving temperature for up to an hour The porcelain enamel interior keeps the taste of the tea pure and allow for easy cleaning Stainless Steel mesh tea Infuser basket included Warranty not included Rinse out with warm water and hand dry