Snowy,
The only time I have cravings are after a century. Then again, after a century, I could eat anything that doesn't try to eat me first. I do indulge in an ice cream sandwich after a century.
I think what you are seeing is your body trying to refuel. Especially if you didn't eat and hydrate right when on your ride. I just wonder how much, and what, you ate and drank on your long ride?