Kawane, Shizuoka, Japan.
Organic oolong / loose leaf.
About the manufacturer
President at Masui-en Tea farm
Esturo Masui is a dedicated tea producer of pesticide-free, all-natural, artisan Japanese tea in Kawane, Shizuoka. He has a profound passion for black tea and other fragrant teas.
About the tea cultivar species
Cultivar details - Kōshun
The Kōshun cultivar is an average grower, bred from the Kurasawa cultivar, which was pollinated with spores from the Kanayamidori cultivar.
Registered on June 27, 2000 with registration no. 8131.
It’s surface branches grow out broadly, and has an average speed of development. It produces a tea with a good appearance. Also the quality of the color, fragrance, and flavor of the brew is high. It contains only low amounts of nitrates and amino acids.
Suggested measurements for 1 portion.
Suggested no. of infusions: 
2) Empty the teapot and insert the tealeaf.
3) Pour right-off-the-boil hot water into the teapot onto the tealeaf.
4) Steep for 20 seconds to 1 minute.
This allows you to continue steeping throughout multiple brews.
Masui’s Koshun Oolong “Kahori”