There are many coffee roasters, but Japanese tea roasters are rare.
Taga Tearoastery is located in Joetsu City, Niigata Prefecture. The aroma of roasted green tea wafts through the air on the street in front of the store. You can choose your own brand and have it roasted by hand to enjoy.
多賀茶焙煎所 Taga Tearoastery https://taga-tearoastery.com/