Is it safe to add vinegar to the water in a canner to prevent mineral buildup on canning jars?
It is safe, as jars vent outward not inward, however, it is not very effective. Instead, wipe off filled jars with vinegar before storage. Or follow directions in GH 1452, "Steps to Success in Home Canning," for soaking empty jars in a vinegar solution before use. No need to replace the solution to soak several batches of jars.
Barbara Willenberg, Nutritional Sciences, University of Missouri-Columbia
Last update: Tuesday, May 05, 2009