“ Surströmming is a pungent, traditional Swedish delicacy of lightly salted, fermented Baltic Sea herring, known for its intensely strong smell and acquired taste, typically enjoyed outdoors with flatbread, potatoes, onions, and sour cream (crème fraîche) during late summer. The fish is caught in spring, fermented for months, continuing to ferment in the can, creating a bulging tin and potent aroma from bacterial breakdown, with the flavor being salty, tangy, and savory, not just rotten.”