Weck Jars, help!
I canned 6 jars of jam last night, two in weck jars and four with ball jars. The ball jars sealed beautifully, the weck jars did not. I processed them together in a water bath for 10 minutes. Before I reprocess the weck jars, is there anything I can do to guarantee a seal? Change the rubber? Anything? This is the first time I've used weck jars