Tetsubin is mainly selling of typical Japanese iron kettles and silver kettles. We strongly believe that using iron kettle for boiling water to make tea may increase the taste of tea where silver kettle may increase tea’s fragrance. Iron kettle is the best utensil for boiling water as well as improving water quality. The elegant silvery white kettle is a highly effective thermal conductor. Its silver ion is believed to have a function of decreasing bitterness of the taste of tea.