This site has some information on the Japanese tea ceremony. It is however not complete but is often linked to as a reference by other people. Basically it is about the use of ceramics such as a Chawan or other ceramics used during the Japanese tea ceremony.
(content sample: holymtn.com/tea/Japanesetea.htm)
” …The host enters with the chawan (tea bowl) which holds the chasen (tea whisk), chakin (the tea cloth) which is a bleached white linen cloth used to dry the bowl, and the chashaku (tea scoop), a slender bamboo scoop used to dispense the matcha, which rests across it. These are arranged next to the water jar which represents the sun (symbolic of yang); the bowl is the moon (yin). Retiring to the preparation room, the host returns with the kensui (waste water bowl), the hishaku (bamboo water ladle) and futaoki (a green bamboo rest for the kettle lid). He then closes the door to the preparation room.
Using a fukusa (fine silk cloth), which represents the spirit of the host, the host purifies the tea container and scoop. Deep significance is found in the host’s careful inspection, folding and handling of the fukusa, for his level of concentration and state of meditation are being intensified. Hot water is ladled into the tea bowl, the whisk is rinsed, the tea bowl is emptied and wiped with the chakin.
Lifting the tea scoop and tea container, the host places three scoops of tea per guest into the tea bowl. Hot water is ladled from the kettle into the teabowl in a quantity sufficient to create a thin paste with the whisk. Additional water is then added to so the paste can be whisked into a thick liquid consistent with pea soup. Unused water in the ladle is returned to the kettle. The host passes the tea bowl to… “
