There is no actual answer to this question. The "best food" in any place is not actually about the food itself; it is about who you were with or why you were there and potentially how drunk you were---while food can heighten or sharpen the emotions you're feeling, it can't create them whole cloth.
That being said: there's a woman on the west side who sells tamales. I've never seen her (at least, to my knowledge) but my coworker used to buy and then bring in huge batches of them whenever their paths crossed. Even lukewarm, even in the sterile office, wolfed down in between meetings and phone calls, they were exquisite.
......which isn't really a contradiction of the point above, because I'm still not 100% sure whether I was responding to my coworker's generosity, seizing a little slice of joy on rough days, or just enjoying the tamales themselves.