In its origins, a Japanese pottery tradition of hand-shaped tea-drinking vessels, which are quickly brought to a high temperature in a firing kiln and when red-hot are immediately removed and left to cool down in the open air. It is a technique that has been elaborated upon by western ceramicists notably, and is generally associated with the practice of rolling these red-hot wares in containers of combustible materials (such as sawdust, leaves…) producing a characteristic metallic crackled surface texture.
