I freeze it in freezer bags, about a litre, in an oblong ice cream tub, shake it down, when frozen, knock it out. the 'bricks' don't waste as much space in the freezer, (I stored quite a bit for when the goats were dry). the bags seem to leak so I thaw them out in a 2 litre jug. Which reminds me, must get one out ofthe freezer tonight, only a couple left now.