Can Ball Glass Jars Be Frozen
Larger items like apples cauliflower or rhubarb schould be portioned first and layered losely into jars.
Can ball glass jars be frozen. When i first started switching my food containers to glass though i discovered one unfortunate thing. Not so much when you are freezing in glass jars. They may not actually say tempered on them but if they are canning jars you can assume they are tempered. Choose freezer safe jars.
Some though not all of their jars even have for freezing fill here embossed on the line. To prevent breakage your best bet for freezing jars is to use straight sided mason jars. Canning jars like those made by ball or kerr are a popular choice. You can freeze solids and fluids without problem in glass jars.
Choose the right shape. While you there are many glass food storage containers out there one of the most economical options for glass food storage is glass canning jars. If i m freezing something largely water soup broth which expands greatly when frozen i fill the jar and set it in the freezer without a lid until it is nearly solid because on occasion i ve found a wide mouth jar cracked in the freezer. 4 plastic no bpa but i try to put as much as i can in glass jars.
Thank you for reminding us not to freeze in jars with shoulders even narrow ones. Been there cleaned up a lot of glass. Glass jars can break in the freezer. Fresh berries beans peas and similar should be washed drained or dried and poured loosely into the jars.
While you can freeze glass opt for mason jars out of an abundance of caution. I have had zero breakage of canning jars in the freezer. For the most reliable freezing look for jars made from tempered glass such as those used for canning fruits and vegetables. At room temperature all glass jars are created equal.
This is not due to breakage but due to my vacuum sealing dehydrated foods and grains. Mason jars have thicker glass and are sturdier than recycled jars. Reuse glass jars from the supermarket for storing bulk dry food not freezing. The jars are reused again and again.
On ball and kerr branded jars which are made by the same mason jar manufacturer the freeze fill line is a thin line found just below the threads about an inch from the rim. For the sake of space i do often freeze foods in plastic zipper bags no. I only use wide mouth ball pint jars half pint ball and kerr jars and 4 oz ball jars that are all approved for freezing purposes.