I'm sure everyone has their own way to do this, but I combined canned tuna with pico de gallo and a little bit of Tapatio sauce. There's essentially nothing in Tapatio or pico to really throw off the nutritional value of tuna, and it gives it some texture and flavor. I try to limit my carbs and fats as much as possible, so I don't do crackers, mayo, or any of that. Great for a quick protein bomb at work.