Every time when I go abroad (I mean out side of Japan), I bring Japanese green tea packed in small paper bags because I found the "Green Tea" of each location is totally different from JAPANESE Green Tea.
I also serve these Japanese green tea for local people and they welcome it.
If you experienced only your local green tea, please try Japanese green tea. It will not sweet rather bitter but tasty. I drink Japanese Green Tea everyday not for health but I love it.