■ This is a beautiful bizen frog houhin made by Naoki Yokoyama.  

     Bizen is one of Japan's six ancient(main) kiln, and bizen ware is basically an unglazed stoneware.
Bizen pottery is created with the combination of fire and high quality Bizen clay.
Bizen is simple and subdued ware, that is to say unadorned simplicity and natural beauty.