Professor Stephen Mennell on food porn
"Significantly, the charge (if it is a charge) has been levelled at the gastronomic essay and the 'learned' cookery book that they have an affinity with pornography. Certainly, both gastronomy and pornography dwell on pleasures of the flesh, and in gastronomic literature as in pornography there is vicarious enjoyment to be had. In gastronomy, however, vicarious enjoyment is more definitely intended to be a prelude to, not a substitute for, direct and actual enjoyment."
Mennell, S. 1996. All Manners of Food: Eating and Taste in England and France from the Middle Ages to Present. 2nd ed. Urbana and Chicago: University of Illinois Press, 271-272.