Japanese Health Cast Iron Teapot has thick wall with good insulation, which is able to maintian water's temperature at 100 centigrade. This teapot not only has great practiality but also high artistic value for admiring with delectable details. designed beautifully with practicality and highly artistic value, which makes it well-known both at home and abroad and popular among tea lovers from ancient to modern times. The water boiled by cast iron is a little sweet and softer than ordinary water. The tea made by cast iron teapot has a special flavor, making tea tastier.