To see saltpeter in your dream, signifies that you will experience a tremendous grief over an extended period of time.
To dream of saltpeter, denotes change in your living will add loss to some unconquerable grief.
A dream of saltpeter will bring with it an inconsolable grief over which you will have a hard time recovering as it may include the loss of a life. To use saltpeter in making pickles in your dream shows a big change in your life.