[miffel]

Maybe because Yerba Mate is more of a Taste of Paraguay? :)

[forinti]

Paraguay and also Uruguay, Argentina, Southern Brazil and anywhere where gauchos have moved.

Interesting fact: Uruguay is a heavy consumer of Mate, but doesn't produce any.

[freitasm]

It's very common in the southern states (Parana, Santa Catarina and Rio Grande do Sul).

[virgulino]

Where the ingredient is called Erva-Mate, and the drink is called Chimarrão.

https://youtu.be/unZL_HwMLIg