Well, it depends if I want a cold tuna sandwich or a hot one. For cold, I go through my veggie bin and see what I have. I like a lot of crunch in my sandwich. Dill pickles run through the fp to make relish, grated carrots, green onions chopped fine, celery, radishes chopped, chopped water chestnuts, Miracle Whip, s&p, a bed of lettuce on my whole grain bread and a deli slice of Swiss cheese on top, always open-faced.
Now for hot tuna bunsteads, tuna, hb eggs, dill pickle relish, finely chopped green onions, celery, grated sharp cheddar cheese, Miracle Whip, s&p. Put this in a good bun, wrap it in foil and put it in a 350 oven for 30 minutes until it's hot and the cheese is melted.
As for tuna, I prefer water packed but not Albacore. It's too dry and dense for a good, juicy tuna sandwich in my humble opinion.