I used to love this product (Pure Leaf Unsweetened); last six pack (exp Oct 2015) tasted of harsh chemicals, as if plastic bottle material leeched into the product. Opened several bottles and the same was with each one. The bottling run stamped on the bottle was: 0658YY030354. Pepsico has independent producers around the country bottling this product and whoever is managing this run needs to shut her down and investigate this toxicity! Wish I could replicate the taste...haven't been able to with all my sun-tea attempts, etc.