Nicknamed Paraguay Tea or Brazil Tea, Yerba Maté (ilex paraguariensis) is a tree from South America that is found in southern Brazil, Argentina and Paraguay. Its leaves are dried and then infused to be able to consume them as a hot or cold drink (tereré). The active elements of mate are caffeine and theobromine. The latter is also found in tea, coffee and chocolate. The yerba mate drink provides natural energy without a rapid drop in energy.