Yerba mate' is an energizing herbal tea commonly drank in South America. It contains caffeine and other related stimulants but provides a much more natural energy than coffee and is easier on the stomach. Many users report a refreshing alertness that is contrasted with the jittery anxious feeling that many coffee drinkers experience. The tea also has a very organic taste that somewhat resembles green tea. An infusion of the leaves and twigs is made by soaking in hot water rather than boiling. Drinking yerba mate' is a social experience, particularly in Argentina. The beverage is passed around in a special gourd called a mate' and sipped through a metal straw called a bombilla.