Masontops Pickle Pebble Fermentation Weights 4 Pack 5 "Very good!" Mr Jenkinson 31 May 2018 Just bought some from the Durham store to move on from the brine filled bag method of weighing down the produce. Two of these weights (on top of a cabbage leaf lid) hold the ferment down well and leave an air gap so the problem of overflowing is gone. I use 2 litre kilner jars so the size is fine. Also the weights are well packaged so can be stored back in their original box when not in use.