I get what you mean Boida.
It isn't a place, or "the first time I had that" or associated with some story you can relate to others.
It isn't something you plan (although you might be planning to have that particular food, not knowing this particular time it's going to hit the spot)
It's just like you said. You lean back, say ahhhhhh....and all's right with the world in that moment.
I'm thinking "soul food"
Edgars example, working in the heat to make the barbeque, takes a long time. You know you're going to enjoy it, but when you sit down and take that first bite.....ahhhhh.....
all kinds of things have done that for me, of course not every time I eat it.
sushi does that sometimes. sometimes liverwurst on white bread with mayo. it can be that last swallow of cold coffee you forgot about. you could have dumped it down the sink, you shot it back instead.