Drain the 3 cans of tuna. Then take your fork and break apart the 3 cans of tuna into a medium-sized bowl. Then, in a separate small bowl, whisk together the vinegar, mayo, and olive oil.
Lastly, choose how you want to eat it! Tuna melt as see above, crackers, open face with avocado mashed, stuffed in avocado, with cucumbers– options are endless!