 In this Sept. 18, 2015, gauchos Luiz Guilherme de Oliveira, 15, left, and Antonio Carlos Pereira, 45, drink mate in Santa Izabel estancia, Alegrete municipality, Rio Grande do Sul state, Brazil. Mate is a traditional South American infused drink, it is prepared by steeping dried leaves of mate herb in hot water and is served with a metal straw from a shared hollow calabash gourd. The mate, is the omnipresent herbal tea seemingly everyone in the south continually sips on. (AP Photo/Eraldo Peres) 