noun
handleless Japanese tea pot
A small, handleless ceramic pot used for brewing Japanese green tea, especially high-grade sencha or gyokuro. The pot is held by the body and poured directly.
宝瓶で淹れた煎茶は格別だ。
Sencha brewed in a handleless tea pot is exceptional.
急須と宝瓶の違いがわかりますか。
Do you know the difference between a kyusu and a houhin?
The kanji 宝 (treasure) and 瓶 (bottle/jar) suggest a treasured vessel. The alternate spelling 泡瓶 uses 泡 (bubble/froth), possibly referring to the froth of whisked tea, though this is uncertain.