These bowls were sometimes imported from Siam and other countries, and vessels of raku were made for the same purpose.
raku ware, so called from the inscribed mark raku (happiness), consisted chiefly of tea-bowls.
This raku was a ware introduced by a Corean called Ameya, about the beginning of the sixteenth century.
It is equally hard to understand why raku should have been preferred to porcelain for this special ceremonial.
Under the first of these classifications may be included Bizen, Seto, raku, and some other wares.
The raku faience owed much of its popularity to the patronage of the tea clubs.