I let the roast pork shoulder cool thoroughly and sliced it all save the butt end. It was good with cauliflower and mashed potatoes. The drippings made a wonderful gravy.
I sealed most of the slices in vacuum bags for freezing. Vacuum sealing works really well, I don’t know how many times I’ve dug something out of the freezer that I didn’t remember putting back and have it turn out like fresh.