One of the notable artistic accomplishments of the Goryeo period was the production of sculptural celadon ceramics, such as this ingenious duck-shaped vessel. The duck’s extended tail is swept upwards to form a handle, which supports a human figure holding a bowl that wine would have been poured into, and its beak is fashioned into a spout. The human figure wears a headdress and a flowing robe, indicating that he is a Daoist immortal and suggesting that this ewer was used for ritual or ceremonial purposes. In its carefully rendered details and beautifully translucent color, this vessel is both a technical tour de force and a playfully charming object for admiration and delight.