I have tried to get away from plastic, too. I cringe when using ziplocks, but I figured it was already frozen so at least no heat to transfer anything to the food. I'll definitely look into using the jars in the freezer, thanks! Have you found a good solution to containers for tea or lemonade? I've not been able to find a stainless steel or glass pitcher that'll hold a gallon. When I milk the goats, I have a stainless steel canister that I transfer to quart glass jars. I have kids and granite counters so I was hoping for a good stainless option.