http://www.surstromming.se/engrossen...eng-folder.htm
You will find everything about this "delicacy" here. But you must know, surströming is a very local tradition in a part of our cost of the Baltic Sea. In my part of the Kingdom, most people never felt the awful smell nor the questionable taste.
I´ll be down in LOS in a couple of weeks. If anybody likes it, I can bring a can.