M brought a refrigerated one home a couple of weeks ago and said stick this in the freezer. We have a 30 below deep freeze and I shove it up against the wall. I assume if froze fast enough because it was ass kicking. Two days before we took it out of the freezer and put in the fridge but it was still pretty rock solid. Then we put it in a cooler full of cold water and let it cold water defrost. It was perfect the next day.