Wisdom of the ancients yerba mate royale energy beverage contains a proprietary herbal blend featuring yerba mate to impart several benefits to the body, including increased energy, enhanced mental alertness and reduced appetite. This nutritious blend also contains stevia for natural sweetness and a variety of antioxidants. Simply combine about 1/4 tsp of yerba mate royale into 8 oz of hot or cold water, mix and enjoy. Each 2. 82 oz container holds approximately 180 servings.