Where in Taipei can I buy yerba mate?

[lostinasia]

This thread may help, although it’s a little old:

A place to buy "yerba mate"?

Hi everyone! I was wondering if it is possible to find a place in Taipei to buy “yerba mate” (argentine drink…sort of tea). If not, I was thinking about carrying my own in my luggage, would there be any problem? Thanks a lot!!