
5-minuterssill
A Swedish ready-to-dress herring preparation: add the classic sliced aromatics and spices to already prepared herring, then serve or chill for fuller flavour.
Traditional method
Pickling in vinegar
Food placed in an already acidic liquid, vinegar, so that acidity comes from the vinegar rather than from microbes; Roman texts document the practice, and later household books extended it to vegetables, fruit, fish and meat.

Vinegar pickling preserves food by holding it in vinegar. The acid comes from the vinegar that is added, not from bacteria that produce acid while the food ferments. That is the difference from lactic pickles, which develop their acidity in place.
Roman texts document vinegar-based preservation, and later household books extended the method to a wider range of vegetables, fruit, fish and meat. The practice is one of the oldest acid preservations in the record.
The acid lowers the pH of the food and changes the conditions for spoilage organisms. Vegetables and fruit are the common subjects of the household tradition, while the wider record also includes fish and meat.
Adding acid does not make a home pickle safe on its own. The amount and the strength of the acid, and the method of holding the food, decide the result, and the historical texts do not give tested amounts.
The sources give no vinegar strength, ratio, holding time or storage limit that a modern cook could rely on. Tested recipes set those amounts, and the historical method cannot be taken as a validated home process.
Food was placed in an already acidic liquid rather than relying on microbes to produce the acid. Roman texts document vinegar-based preservation, and later household traditions expanded the range of vegetables, fruit, fish and meat treated this way.
Scaling: source batch only
Adding acid does not make a home pickle safe on its own. The historical texts give no vinegar strength, ratio, time or storage limit.
Hazard sourceUse a tested vinegar pickling recipe that sets the acid level, ratio and storage conditions.
Control sourceThe sources record historical practice only. They are not a tested home method.
Roman texts document vinegar-based preservation; the record does not establish a single origin.
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Perseus Digital Library (University of Chicago)History · Method
https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Apicius/1%2A.htmlRoman texts document vinegar-based preservation
Cited in: What it is; A long-running method; Why acidity matters; Limits of the record
Victorian LondonHistory
https://www.victorianlondon.org/publications7/beeton-30.htmLater household traditions extended vinegar pickling to vegetables, fruit, fish and meat