How to Store or Freeze Anything in a Mason JarSelect the Right Size Mason Jar. Allow the Soup, Stew, or Main Dish to Cool. Transfer to the Mason Jar. Leave Enough Room. Cool Completely in the Refrigerator. Add a Label. Freeze the Mason Jars.Aug 20, 2018
Glass is a poor thermal conductor and rapid changes in temperature (roughly 60°F and greater) may create stress fractures in the glass that may eventually crack. When heated, thin glass begins to crack and typically breaks at 302–392°F.