[1] The suribachi is a pottery bowl, glazed on the outside and with a rough pattern called kushi-no-me on the unglazed inside.
The surikogi pestle is made from wood to avoid excessive wear on the suribachi.
To use the suribachi the bowl is set on a non-slip surface, such as a rubber mat or a damp towel, and the surikogi is used to grind the material.
A larger sized Japanese mortar used to pound rice is an usu with a pestle called kine.
[2][3] The highest mountain on Iwo Jima, Mount Suribachi, was named after this kitchen device.