When they're fresh, they're oh-so-good, but just because pickles are pickled doesn't mean they can't go bad. Once you open a jar, it doesn't have an unlimited lifespan, but it may last longer than ...
The reader who suggested hitting a jar with a knife handle was correct, but tapping is a better word. I tried to teach a co-worker at a deli how to open large pickle jars. Two days later, I was called ...