Other uses for preserved lemons can be; added to horseradish, Bloody Mary’s, tagines, rice, vinaigrette's, salads, stews, soup, tempanade, mashed with butter and spread on seafood. You can really use them anywhere lemons are called for (in savory recipes), just substitute in a bit of these preserved lemons when you want a bit more intense lemon flavor.
You must sterilize the jar you use to ensure any bacteria or germs that are on the jar are destroyed. Otherwise your lemons will be contaminated, and all your hard work will go down the drain. To sterilize jar without boiling: wash jar with hot soapy water, rinse well and dry. Place in a 225°F oven for 20 minutes, then turn off the oven and allow to cool inside the oven until it's cool enough to handle. Sudden changes in the jars temperature can cause it to shatter, so ensure it is cool before you fill it.