I just don't get them!
Basically, it's just all the ingredients for a nice cheese and pickle sandwich laid out on a plate with an apple on the side. If you want a cheese and pickle sandwich, just ask for one, don't let restaurants rip you off by plonking a few bits of cheese and bread on a plate and then charging you for the privilege of assembling it. You probably don't even want the apple.
Say no to ploughmans lunches!