I've used it a few times after purchase, but I'm selling it to declutter as I don't use it much. New retail price: 7,150 yen Founded in 1794, Yamadaka Katoen is a maker of Takada-yaki, a type of Mino ware, and has been making suribachi (mortar and pestle) for generations. The Wara-hai JUJU mortier is a suribachi created by the seventh generation of this kiln, Tomoya Kato. Its main feature is the "hamon kushime" (ripple comb teeth), which was developed through research and training over a period of about nine years. This suribachi, which combines design and practicality, won the Good Design Award in 2012. The beautiful curved "hamon kushime," which took approximately nine years to develop, allows the surikogi (pestle) to firmly grip the teeth. This prevents ingredients from escaping upwards while grinding, allowing you to grind quickly and with less effort. Also, while it is generally said that suribachi are better for grinding clockwise due to the manufacturing process, the ripple teeth allow you to grind regardless of your dominant hand, whether you turn it clockwise or counterclockwise. Furthermore, the friction on the ingredients is reduced, allowing for more flavorful and delicious cooking.