However, sometimes, there is nothing than can be done. Do not freeze fruits and vegetables in containers with a capacity over one-half gallon. Foods in larger containers freeze too slowly to result in a satisfactory product. Resistant to moisture and vapors. Straight sides on rigid containers make the frozen food much easier to get out.
Rigid containers are often reuseable and make the stacking of foods in the freezer easier.
Regular glass jars break easily at freezer temperature. These jars have been tempered to withstand extremes in temperatures. The wide mouth allows easy removal of partially thawed foods. Expansion of the liquid could cause the jars to break at the neck. Some foods will need to be thawed completely before removal from the jar.