To instantly provide extremely fresh drinking water outdoors in an extremely economical manner, to repeatedly use a main body and a cock device many times without discarding them after a single utilization, to enable the regeneration and reutilization of them after deterioration to reduce refuse, and to achieve the protection of environment and the conservation of limited precious resources.

The main body E10 is constituted of a housing part E11 having volume suitable for one drinking and a large caliper pour part E14 for taking in and out a small bag E30 or pouring hot water/water or washing. The cock device E20 closes the main body E10 hermetically to serve tea from the small bag 30 or to mix a powder and water and is constituted in an easily shakable manner. The small bag E30 is formed by sealing tea E31 or a powder E32 in a Japanese paper bag E33 in an amount suitable for one drinking and housed in a portable inner bag E36 easy to carry.