Place the desired legumes in the Mason jars. Fill the jars with brine or water until there is approximately one inch between the top of the jar and the contents.
Preheat your oven to approximately 300 degrees.
Place the lids on the Mason jars without the bands or clips. Position the bottles on a baking sheet.
Heat the Mason jars filled with legumes by placing them in the preheated oven on the baking sheet. Allow the jars to remain in the oven for 30 to 50 minutes.
Remove the jars from the oven and let them sit for approximately 24 hours.
Fit the band portion or clip of the lids on the jars and tighten the lids for an airtight seal.
Add labels to the jars with the name of the contents as well as the bottling date. Place them in a cool, dark, dry area for storage.