A traditional South American beverage made by steeping the dried leaves of the yerba mate plant in hot water. Mate is traditionally served in a calabash gourd and sipped through a silver straw (bombilla). Mate purist never wash their gourd.
This is a picture of a what a typical cup of yerba mate looks like in Argentina. The mate is served warm in a gourd and it is drank with a bombilla. Yerba mate isn't just for special occasions, it can be enjoyed on a daily basis.