Kameosa - 瓶長 - [yokai]
• about this yokai: Another example of a Tsukumogami - This antique water flask has become a bottomless bottle of plenty, and will magically produce an ample bounty of whatever liquid is poured inside of it: it produces an endless amount of the liquid continuously; it likes humans and LOVES to share! Just be careful, it tends to get VERY EXCITED and overflow!!! (it's very partial to sake & alcohol!!)
•Early Appearances & History:
Kameosa's Earliest named appearance was in 1784 as part of Toriyamas [百器徒然袋] Gazu Hyakki Tsurezure Bukuro it was the last one included in the book and named after one of his students who called himself a shojo because he loved to drink! - The bottomless flask itself seems to be in reference to a famous story/play "Shōjō Midare" - 猩々乱"
see also: Shojo, Choku Boron.