To me, a homemade tuna sandwich is tuna and mayo on white bread. However, I loved the Thai Tuna wraps the place on the corner used to make. Don't know why it never occurred to me that I could make that at home! I used 2 green onions and sriracha for the chilis. Didn't have any lettuce so I chopped up a stalk of celery. 1/2 on a tortilla for lunch. Wonderful. The next day I added sliced avocado to the wrap. Also wonderful.