I think that Caesar would adapt well to McDonalds Hamburgers and Pizza Hut pizza. I think that is how Pizza Hut pizza is designed. It would not be on the Pizza Hut menu if most of the world did not find it inoffensive. H. Salt Fish and Chips died because not enough people found it inoffensive and that is popular in Britain. There are not a lot of people in the world who instantly hate the taste of a McDonalds Hamburger.
People adapt really quickly to ice cream.
So we never will know for sure, but Julius Caesar would probably love our junk food. He ate it. He said that it was Mediterranean in taste. He did not find it that tasty, though he did like a nut and berry salad and a honeyed tea drink. I hope to get more to report.