Bowl with snowflakes design in overglaze enamel, underglaze sprayed thin black ink and sumi-hajiki.
Iroe (literally color painting in Japanese) is a technique in which a transparent glaze is applied and the piece glost-fired, then paint is applied over the glaze and the piece is fired again at a low temperature of approximately 800 degrees Celsius. It is also called uwae, or over-painting. The paint used in traditional iroe is known as wa-enogu (Japanese-style paint), and color choices include red, blue, yellow, green and purple. It is also possible to use yo-enogu (Western-style paint).