1 oz Yerba Mate in ziploc bag. Yerba maté is prized as a delicious, gently energizing herbal tea. The flavor of the natural leaf is herbaceous and somewhat like green tea. Botanical name: Ilex paraguariensis St. Hil., Ilex paraguariensis A. St.-Hil. As a tea, pour 1 cup boiling water over 1 tsp of herb, cover and steep 3-5 minutes. Yerba mate leaf (llex paraguariensis). Serving Size: 1 tsp. Yerba Mate has traditionally been used as a lightly stimulating beverage from South America that has a mild amount of caffeine with a little kick.