just remembered... a few years back I was helping organise a spit at the a sports function... the crackling didn't work on the pig, and someone was about to throw it out. I said give it here and I took it home and put it in the freezer

Over the next 2 or 3 months (maybe not that long), I'd grab bits out and stick it in the oven on high for a little while as a nice little addition to dinner - hmmmm yummmm