In all my years of canning, I’ve never had a bad jar . . or if I did, I didn’t know it and we survived. As I was packing up my jars, I noticed this jar of beans:
The jar is still sealed. No oozing and the lid is still down. Since the beans were put up in batches of 7 quarts and this was the only bad jar, I’m guessing there was a contaminant in the jar and it wasn’t properly cleaned and sterilized.
Of course I’ll throw it away but I thought it was interesting that this happened.