Begin by sterilizing 3 500ml jars. To sterilize your jars, wash the jars well in hot, soapy water. Rinse the soap off in hot running water and place the clean jars into a large pot of water. Be sure that the jars are fully submerged right side up. Turn the heat to medium-high and allow the jars to sit in the water until the water comes to a boil. Once the water is boiling, time the jars for at least 5 minutes. Reduce the heat to simmer and leave the jars in the pot until you're ready to use. When removing the jars, avoid contact with the inside of the jar when removing it from the pot or when filling it with the ingredients. To sterilize the seals and lids, wash them as you did the jars, and boil water in your kettle. Pour the boiled water into a clean bowl and drop the seals and lids into the water. Be sure the lids and seals and completely submerged.