- Our Raspberry Lemongrass Yerba Mate tea is a scrumptuous all-natural flavored Yerba Mate coffee substitute with Raspberries (Red), Lemongrass and Lemon Peel that will refresh you with its terrific taste! You will enjoy the earthy and acidity-free Raspberry Lemongrass aroma and flavor again and again! – Ingredients: Yerba Mate, Raspberries (Red), Lemongrass, Lemon Peel and Natural Raspberry Lemongrass Flavor.