Canning jar makers now recommend that lids should not be heated before being put onto jars for processing.
Canning jar makers now recommend that lids should not be heated before being put onto jars for processing. The Kansas City Star File photo by FRED BLOCHER
Canning jar makers now recommend that lids should not be heated before being put onto jars for processing. The Kansas City Star File photo by FRED BLOCHER

Q&A: To heat, or not to heat, the canning jar lids?

September 16, 2014 07:00 AM