Sealing canning jars with wax is an easy way to preserve food that you'll use within a short amount of time, such as two to three months. When the wax on jars becomes older, it may shrink and lose its sealing hold. This allows air into the food, which lets bacteria and mold enter. To be extra safe, it's a good idea to use a lid and ring over the top of the wax seal. This keeps air out, while giving the jar a tighter seal.
Instructions
1. Spoon the prepared food into the canning jars, leaving about 1/2 inch clear at the top.
2. Place the paraffin wax in the top pot of a double boiler. A double boiler is made up of two pots, one on the bottom for water and a second pot that fits inside the first to hold the food. These pots are used for making candy and other confections. Fill the bottom pan halfway with water. Allow the water to boil while the wax melts in the top pot.
3. Use a candy thermometer to make sure the wax does not go over 375 degrees Fahrenheit.
4. Melt the wax completely. It will be clear, with a water-like texture.
5. Spoon wax into each jar on top of the processed food to fill the jar. Allow the wax to cool a bit. It will have a white, solid appearance, but still feel warm to the touch.
6. Place a lid onto each jar. Screw on a ring over each lid. The warmth of the wax will help the lid and ring produce a second seal as it becomes cool.
Tags: canning jars, double boiler, ring over