Yokotsuka-san’s tetsubin are meticulously made, demonstrating equal concern for beauty and functionality. For example, he only uses his self-made molds once to insure that the patterns on the kettles are crisp. The works are remarkably lightweight and spouts are well balanced, pouring beautifully without dribbling. The small perforations on the kettles’ forged, hollow handles remain cool even when heated.
This tetsubin is made of cast iron and its interior is untreated. Instead, after each work is cast it is baked in charcoal to prevent interior rust until a natural mineral layer is formed through use. The exterior is coated with an iron mordant base and urushi lacquer that gives it a reddish brown appearance.