You know, a lot of sushi places have a separate menu where you can order something that isn't sushi. He could probably get sukiyaki, Japanese curry, or something like that. Do you suppose you could get him interested in Japanese food in general?

A lot of people balk at the idea of eating uncooked fish, and I did at first until I tried it. Now, I love the stuff. I can't get enough of it in fact. You never really know if you're going to like something until you try it.