Seeing this thread reminded me of something, and now I'm feeling all nostalgic. When I was younger, we'd go to the Portsmouth Historic Dockyards most times we visited my Nan and Grandad's. There was this cafe there where you could get custom sandwiches, i.e there was a list of ingredients and you could pick which ingredients went in your sandwich, the more ingredients the higher the cost. I don't know what was going through my head the first time we had lunch there, but I asked for a pineapple sandwich. Just pineapple, bread and butter. And it was really nice! After that, I'd have a pineapple sandwich every time we had lunch there.

So, my answer is: a pineapple sandwich.