I wrote about making homemade imitation pumpkin spice lattes the other week, and when I was writing it, I more or less assumed the pumpkin spice latte had been around forever as a “fall flavor,” a pretty obvious extension of pumpkin pie and Thanksgiving.
I did not know that Starbucks invented the pumpkin spice latte in 2003. The pumpkin spice latte is ba…

