紫砂壶 (zǐshā hú, Yixing clay teapots) are prized in Chinese tea culture. They absorb tea flavors over time, so dedicated tea drinkers use one pot per tea type.
usage
壶 also works as a measure word for liquids: 一壶茶 (a pot of tea), 一壶酒 (a pot of wine/liquor).
