"4 Small Blue Imari Cups 18th "
4 small blue Imari cups from Japan 1780 Mid-Edo period Painted in blue and gold with gold powder The painting is done with cobalt (gosu) on a white support, a glaze (overglaze) is applied on top of the painting, then high temperature reduction firing (firing in an incomplete combustion flame, rich in carbon and deficient in oxygen). is done. A small cylindrical Imari pottery is commonly called Nozomi choko. “Peeking” comes from the fact that you can’t see inside unless you look at it. In fact, it appears it was used to add seasonings. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato