The Pumpkin Spice Latte takeover
Since Peter Dukes, Starbucks’ director of espresso, and his team developed the infamous Pumpkin Spice Latte (PSL) in the Liquid Lab just short of 20 years ago, the PSL has become not only Starbucks’ most popular seasonal product since its launch but has become a way of life for some and a cultural phenomenon for even more. For all, though, the annual re-up of the pumpkin drink is a signal of the oncoming fall season.