Why stinky cheeses stink (video)

WASHINGTON, June 27, 2018 — 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 herring and why it smells so strong, with help from H.E. Karin Olofsdotter, Swedish ambassador to the U.S., and her team:

Youtube ID: Vk2V2bpxfAc

Reactions is a video series produced by the American Chemical Society and PBS Digital Studios. Subscribe to Reactions at and follow us on Twitter @ACSReactions.

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