Surstromming: The secrets of this stinky Swedish fish

It has been called the smelliest food in the world.
But surstr枚mming鈥擲wedish for "sour herring"鈥攊s beloved in Sweden as a summer treat.
In this video, Reactions explains the chemistry of how to preserve herring and why it smells so strong, with help from H.E. Karin Olofsdotter, Swedish ambassador to the U.S., and her team:
Provided by American Chemical Society