How to Freeze Food in Canning Jars
...se a BPA-free Tattler lid, though I haven’t tried them. For freezing I use food grade plastic lids sold by Ball. Food is not in contact with the lid, so I’m not too concerned about the plastic, though I understand that some people won’t agree. At least the lids are more easily reused than ziplock bags. It looks like Ball now has BPA free lids. But jars won’t work for freezing a pork chop–see an interesting thread on Chowhound about this issue that...