Server
The server of a sake set is a flask called a tokkuri (ja:徳利). A tokkuri is generally bulbous with a narrow neck, but may have a variety of other shapes, including that of a spouted serving bowl (katakuchi). Traditionally, heated sake is often warmed by placing the sake-filled tokkuri in a pan of hot water, and thus the narrowed neck would prevent the heat from escaping. In more authentic places such as oden bars and ryōtei in Japan, sake is sometimes warmed and served in metal containers known as chirori (ja:ちろり, kanji:銚釐) or tanpo (ja:たんぽ, kanji:湯婆). Recently, glass chirori are also used to chill sake.
Read more about this topic: Sake Set