Sanpo America Maru Mug Blue — Hand-Glazed Japanese Pottery by Ippo KilnGlazed in a settled, layered blue, this mug holds its color differently depending on the light where the glaze pools it deepens, where it thins it lightens, and no two pieces fire to quite the same tone. Ippo Kiln forms and glazing each mug by hand in Japan, working at a pace that allows every piece to be made individually. The result is a mug that carries the marks of its making never perfectly uniform, always consistent in character. Japanese