A tiny selection of the flavor compounds in pumpkin and pumpkin-pie spices is enough to make our brain think, "Ah, pumpkin pie!" when we drink a pumpkin pie latte. Ashley MacKinnon/Flickr hide caption toggle caption Ashley MacKinnon/Flickr The Salt Just What Is In Pumpkin Spice Flavor? (Hint: Not Pumpkin) November 19, 2014 Pumpkin spice is the flavor of the season, but does anyone think there's real pumpkin in the "science goo" in our lattes? Turns out flavor companies have come up with a simple chemical recipe for it.