Yerba mate leaves steeped in a hollow gourd and sipped through a metal straw (bombilla). Argentina's daily ritual: an infusion drunk hot or cold, shared in a circle, the original social caffeinated beverage.

Yerba mate is indigenous to the Guarani people of the Parana basin in pre-Columbian times. Jesuit missions cultivated it commercially in the 1600s in northeast Argentina. Today the average Argentine drinks 6.5 kg of yerba mate a year, more than any other country; the ritual remains intact (the cebador prepares and passes the gourd around the circle).

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