Preserved lemons

Ever since I got a Moroccan cookbook, preserved lemons have been on my personal bucketfoodlist. I tried making my own once, but let's just say there was something of a sterility issue. I did find some at an Indian wholesalers, but decided that a 2kg tub was not the way to start my investigation. Finally, I discovered some at a deli at the Victoria Markets. They are now sitting in my frig, waiting to be utilised...