4-piece Japanese Cast Iron Teapot with Infuser for Loose Leaf Tea Tetsubin Tea Kettle Set Black w/Trivet (10 oz) The heavy cast iron teapot can enhance tea taste and retain heat better. There is an enamel coated interior for preventing rust and making it easy to clean. Comes with a removable stainless steel mesh infuser for steeping loose leaf teas. Can be used over a flame, glass or electric burner to heat water. Package includes one 10 oz teapot, one trivet and two 1 oz cups.