TeaLeafs Sample Flavors of the day for Tuesday, May 21: EMPEROR'S 7 TREASURES- A Black Tea/ Green Tea Blend with the fruity, sweet flavor of Peaches and MATE CHAI- Warm, spicy Chai spices mix well with Yerba Mate which is said to improve mood, enhance mental clarity and aid in weight loss. Yerba Mate is an herb from Brazil. It does contain Caffeine