Yerba Mate tea is a South American beverage made by steeping the ground leaves and stems of the Yerba Mate plant. This tea is a central nervous system stimulant containing caffeine, as well as other nutrients such as antioxidants, amino acids, polyphenols, vitamins, and minerals. Yerba Mate is one of the world's most effective and healing beverages with over 196 active compounds. This brew is light to medium-bodied with a fresh, herbaceous, and slightly grassy flavor.