You know, nobody eats in England. Three or four pints of English beer a night fills you. I can't say I'm very impressed with the food in America. it's all sort of bland. Like turkey sandwiches.
One can, in principle, outline sort of a set of neural circuits that are critically involved and even identify disorders that affect different components of that neural circuit and see what happens if you knock out, for example, inability to recognize faces, how it affects your response to portraiture.