- Our Wild Berry Hibiscus Yerba Mate tea is a scrumptuous all-natural flavored Yerba Mate coffee substitute with Blueberries, Hibiscus Flower and Strawberries that will refresh you with its terrific taste! You will enjoy the earthy and acidity-free Wild Berry Hibiscus aroma and flavor again and again! – Ingredients: Yerba Mate, Blueberries, Hibiscus Flower, Strawberries and Natural Wild Berry Hibiscus Flavor.