To can the jars add them to a large pot of boiling water. The water should be covering the top by 1-inch and boil for 10 minutes. Turn the heat off and continue to let the jars sit in the water for an additional 5 minutes. 2. Use tongs to carefully remove the jars from the water. You should hear the lids suction while in the pot. To test them, remove the ring from the jar and lift the jars by the flat, inner lid. If the lid releases then it may not have a proper seal. Use unsealed jars within a month and kept in the refrigerator. Store sealed jars can in a dark area for up to 6 months.