Surströmming is a traditional Swedish dish made from fermented herring. The fish is caught in the spring and then stored in barrels to ferment for several months. This process gives surströmming its strong odor and unique flavor, which many find challenging to enjoy. Typically served with flatbreads, potatoes, and onions, surströmming is often eaten outdoors due to its potent smell. It is considered a delicacy in Sweden and is usually enjoyed during special occasions, particularly in late summer when people gather for surströmmingspremiär, the annual surströmming premiere.