Raku-yaki (楽焼), or Raku ware, is a type of Japanese pottery that is traditionally and primarily used in the Japanese tea ceremony in Japan, most often in the form of tea bowls. It is traditionally characterized by hand-molding of the clay as opposed to turning it on a potter's wheel, resulting in each piece being "one-of-a-kind"; low firing temperatures (resulting in a fairly porous body); lead glazes; and the removal of pieces from the kiln while still glowing hot. In the traditional Japanese firing process, the fired Raku piece is removed from the hot kiln and put directly into water or allowed to cool in the open air. Raku techniques have been adopted and modified by contemporary potters worldwide.