In principle, I would love to be a Michael-Pollan-style eater of real food, but in practice I have trouble. I keep telling myself that someday I will do better.
So please don't be angry or upset when I tell you that I usually buy store-brand American cheese (not “cheese product,” though) for my sandwiches. It's just easier than understanding all the complicated varieties of real cheese, and now it's part of my routine.
I do like to change things up from time to time, so yesterday I bought the white kind of American cheese, like they have at Subway, rather than the yellow kind. I thought to myself, it will be good to have sandwiches that are basically the same, but taste slightly different.
But I hope I didn't have an ulterior motive.