JOMON EARTHENWARE Sankaku (with turmeric cloth, branding iron and wooden box)
They were used more than 10,000 years ago.
Although this Earthenware has the same decorativeness as contemporary art, in its simplest form, it is a stylized clay pot from a bonfire.
They are baked at low temperature in a wood-fired kiln. The large emission of far infrared from them purify the air with little added heat for cooking.
Three crests, which when viewed from above appear to resemble a triangle.