I wonder if anyone has done any freezing in canning jars? I would imagine that if you are freezing something wet you would have to adjust down the fill level? I have a few things in canning jars in the freezer, but usually the contents are dry things, such as potato buds from the LDS Bishop's Storehouse. Freezer jam? Maybe it is not a good idea? We're getting ready to cook up our bushel of green chili's into the large batch of green chili. I cooked 21 pounds of pork should roast yesterday in preparation for today's big job. We are trying to avoid plastic whenever we can. Daughter freezes up berries, fruits, etc in jars in jars in preparation of making smoothies. There is just the fruit, no added moisture. That happens when she runs it in her Vitamix.