Iwachu Iron Teapot, Type 7 Arare, 0.9L, Nambu Tekki (Southern Ironware) Purchased on Amazon (https://amzn.asia/d/4beaI7l) three years ago for 15,000 yen. Used regularly. Has developed a layer of limescale inside. There are a few small spots of rust inside and one on the lid (see photos). Size (cm): 15 x 17.5 x (H) 17; Full capacity: 0.9L Material: Cast iron (Exterior: Black baked finish, Interior: Kiln-fired finish) Made in Japan Heat source: Compatible with gas stoves. Compatible with IH (100V, 200V). The hot water boiled in a Nambu iron teapot dissolves iron, making the taste milder.