The sun is still blazing, summer holidays aren’t quite over, and yet autumn has already arrived - well in cup form at least.
Starbucks officially launched its Pumpkin Spice Latte this week, marking the unofficial start of autumn on coffee shop menus. Since its debut in 2003, the Pumpkin Spice Latte (also known as the PSL) has become a commercial juggernaut, with hundreds of millions sold and an entire pumpkin-spice industry springing up in its wake.