Materva

Materva is a mate-based soft drink, originally produced and popularized in Cuba prior to the Cuban Revolution. It has been produced in Miami since the 1960s by Cawy Bottling Company. Materva is a carbonated drink made from yerba mate, a tea popular in Uruguay, Chile, Argentina, Bolivia, Brazil, and Paraguay. Unlike the somewhat bitter tea-like mate on which it is based, Materva is sweet, with a flavor described as similar to ginger ale or cream soda. Current production includes a diet version called Diet Materva.

Source: Wikipedia