Yerba mate is a traditional South American beverage made from the leaves of the yerba mate plant. It is typically consumed in a gourd or cup, with a metal straw called a bombilla. The taste of yerba mate is rich and smooth, with a slightly bitter aftertaste. It is often compared to drinking tea, but with a more intense flavor. While it may not be the most economical choice, many people find the superior taste and quality of yerba mate to be worth the investment.