Not too long ago, I bought a huge pumpkin (such a practical thing, for two dollars, it feeds you for a whole week...), so I made a puree out of it and now we're eating it with everything, literally. And if we're going to put it everywhere, why not make a café latte out of it!
Well, we didn't invent anything new, pumpkin spice latte is pretty well-known. But we wanted to make it with real pumpkin inside, not some crappy Halloween flavored syrup!
And yes, by the way, if you have a life and don't have the time to cook a pumpkin, you can find cans of pure pumpkin puree, without salt and all that. Convenient, even for making other recipes like pumpkin pie ;)