Paraguay tea : See Mate, the leaf of the Brazilian holly.

Example:


Taxonomy
Paraguay Tea, Yerba Maté, botanical, Herbal, Herb, the leaves, Ilex Paraguayensis, Ilex, Houx, South America, Synonym, Constituents, Medicinal Action, Brazil, herbal information, herbal products, Species, Ilex vomitoria.

Defination from the web:
... Paraguay exports 5 to 6 million pounds annually. The tea is very sustaining, and sometimes it is the only refreshment carried for a journey of several days. ...