Pickling lime is food grade calcium hydroxide.
What it does is elevate pH and maintain calcium.
Where to buy Balls Pickle Lime
"After checking all the stores in my area... Super Kmart, Super SandS, Big Y, etc..etc..etc I've have not been able to locate this lime. I called Altrista Corp. makers of Ball products and they were happy to send it to me. Costs 16oz $1.30 or a 12 pk(master canner) for $14.20 + $6 for shipping.$20.28 for 12 lb. Altrista Corp seems to be out of business please use the link below for Mrs Wages Mrs Wages sells food grade Calcium hydroxide They are in Muncie Indiana (apparently the canning capital of the nation)"