Hakusan Porcelain Conte Square White Matte (approx.) 10 x 10 x 5.8 cm, Hasami ware, Made in Japan

From Amazon

● Introducing functional and stylish Hakusan pottery ● Versatile for butter, jam, pickles, tsukudani, and more Size: 10 x 10 x 5.8 cm 0.45 kg Porcelain Country of Origin: Japan