It was 21 years years ago, back in aught-3, on a day that should go down in brand marketing history, when Starbucks introduced the Pumpkin Spice Latte. The move set off a fall beverage revolution. Now, virtually every shop that sells coffee — from 7-Eleven to indie roasters — offers some version of the PSL or other fall-flavored drinks.

The PSL, which Starbucks says is its most popular seasonal beverage – available hot, iced or blended – is made with real pumpkin flavor; pumpkin-related spices, including cinnamon, nutmeg and clove; Starbucks Signature Espresso and steamed milk. The drink is topped with whipped cream and pumpkin pie spices.