Surstromming: The secrets of this stinky Swedish fish

June 27, 2018, American Chemical Society
Credit: The American Chemical Society

It has been called the smelliest food in the world.

But surströmming—Swedish for "sour herring"—is beloved in Sweden as a summer treat.

In this video, Reactions explains the chemistry of how to preserve and why it smells so strong, with help from H.E. Karin Olofsdotter, Swedish ambassador to the U.S., and her team:

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