Hmm let's start off with some good whole wheat bread, or an artisans bread like rosemary with olive oil. Then add some sort of Dijon, or honey mustard, depending on the day. On top of that put some fairly thick but not overly thick slices of extra sharp non-lowfat cheddar cheese. Preferably the stuff that isn't mass-produced to an insane degree, it has more flavor. And low-fat cheddar is just gross, you can't melt it evenly at all and it has no bite. Then add ham, pastrami, turkey, chorizo or whatever lunch meat you want and enjoy. You can add additional toppings (like lettuce and tomato) if you want, but I usually don't have them in the house.