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Surströmming

fermented herring with a strong connection to northern Sweden

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 24, 2026
Entity authorityQ778396 ↗
Source-derived summary

Surströmming (pronounced [ˈsʉ̂ːˌʂʈrœmːɪŋ]; Swedish for 'sour herring') is a lightly salted, fermented Baltic Sea herring traditional to Swedish cuisine since at least the 16th century. It is distinct from fried or pickled herring.

The Baltic herring, known as strömming in Swedish, is smaller than the Atlantic herring found in the North Sea. Traditionally, strömming is defined as herring caught in the brackish waters of the Baltic north of the Kalmar Strait. The herring used for surströmming are caught prior to spawning in April and May.

During the production of surströmming, just enough salt is used to prevent the raw herring from rotting while allowing it to ferment. A fermentation process of at least six months gives the fish its characteristic strong smell and somewhat acidic taste. Surströmming has one of the most putrid food smells in the world, even stronger than similarly fermented fish dishes such as the Korean hongeo-hoe, the Japanese kusaya or the Icelandic hákarl, making surströmming an acquired taste.

At the end of the 1940s, surströmming producers in Sweden lobbied for a royal ordinance (Swedish: förordning) that would prevent incompletely fermented fish from being sold. The decree that was issued forbade sales of the current year's production in Sweden prior to the third Thursday in August.

Editorial summary

Begin with the source’s own compact description: “Surströmming” is fermented herring with a strong connection to northern Sweden. The dossier treats that line as a proposition to test through Surströmming, fermented and herring, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current 209-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Surströmming, fermented and herring is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “fermented herring with a strong connection to northern Sweden” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 24, 2026. The linked authority identifier is Q778396. None of the 0 selected statements returned an explicit reference.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from “Surströmming” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.