Unity cast iron "vitality" teapot brick finish. graceful, elegant cast iron tetsubin teapot crafted in the Japanese style. inspired by highly prized antique Japanese cast iron teapots still in use today. features a black enamel interior coated that helps prevent rust includes a stainless steel tea brewing basket for ease of preparation. for brewing and serving tea. not intended for stovetop use. 37-ounce capacity hand wash.