This little fellow is a small 'chawan' or tea bowl shape often used to serve matcha or green tea. It nests well in the hands and can also be used for other beverages or side dishes.
 
LxWxH:
13x12x6 cm
 
Red stoneware made from a blend of clays, fired to 1220° C 
Watertight, dishwasher and oven safe, though best to wash by hand if possible