Surströmming is a fermented fish product made with strömming, a type of herring, sourced from the cold waters of the Baltic Sea, usually in spring. The fish is salted, cleaned, and allowed to ferment before being canned. This herring is defined by a rather distinctive and strong odor that results from its fermentation process, which is initiated by a type of lactic acid enzyme in the herring’s spine and it doesn’t cease even after the fish has been canned.
Despite its strong smell, the fermented herring has an interesting flavor that is a perfect mix of piquant, savory, and acidic. There’s also an annual surströmming festival (surströmmingsskiva) in Alfta, Halsingland, which traditionally takes place on the third Thursday in August, when a significant number of enthusiastic Swedes and fans of this fermented fish delicacy gather to savor the contents of numerous bulging cans of surströmming.
Baltic herring (lat. Clupea harengus membras) is a subspecies of the Atlantic herring, but it is smaller and lives in the brackish waters of the Baltic Sea. It is a schooling fish that feeds on zooplankton and small crustaceans, and typically reaches only 5.5 to 7 inches (14 to 18 cm) in length.
It is a staple food source in the Baltic region, featuring in dishes like smoked herring and salads.
Lumpfish roe is one of the more available roe varieties, and it is usually reasonably priced. It is harvested from lumpfish (Cyclopterus lumpus), which is mostly found in the cold waters of the North Atlantic. The natural color of the roe can vary, though it is usually pale gray or dusty pink.
However, most producers opt for artificial coloring to attain appealing red or black hues. The beads are small, mildly-flavored, briny, and subtly sweet. Lumpfish roe is an excellent addition to appetizers, salads, soups, or seafood-based main dishes.
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