What is the cold herbal tea paraguayans drink?

The cold herbal tea Paraguayans drink is called Tereré.

Explanation:

The cold herbal tea Paraguayans drink is called Tereré. Tereré is the official beverage of Paraguay and is considered part of its cultural heritage. Even though it's typical of Paraguay, it's also drank in the north of Argentina and in some parts of southern Brazil. Tereré is prepared in a vase called "mate", filled with herbs. It may also be filled with what is called "yerba mate". A bulb is placed in the mate in order to drink the beverage and it gets filled with cold water.

nope, but i have cleaned my brush in my cup of not as potentially harmful but nevertheless, very upsetting for scottish/british folks. especially if you've used the last teabag for it

explanation:

there could be something in that . . i am indeed an old scottish man!

there's a bit of bolshie-ness with it too though. i won't let go of the old ways . . tea and whisky . . whether the young whippersnappers like it or not!