FWIW, I've seen the term 'trail porn' used for photos that long distance hikers take of particularly tasty and/or "in quantity" food that they had while in town.

First time this happened to me someone asked if I wanted to see some "trail porn" and I was more than dubious about this, but he showed me a photo of a truly dagwood type hamburger he had made up special at a town stop, and I instantly and viscerally understood how well the term fit.

People also sometimes take the paper/disposable menus from restaurants they like, and I can't tell where the 'food porn' part ends and the 'food torture' begins for someone to look at something like this when you're eating ramen on trail.
Brian Lewis