Description
Ancient Scandinavian fish were salted and buried in plant ash to create an alkaline, high‑salt environment that favored halophilic lactic acid bacteria.
Technical
The ash raises the pH to 8.5–9.5 while supplying calcium, potassium, and magnesium ions that inhibit spoilage microbes. Lactic acid bacteria such as Lactobacillus plantarum and Pediococcus pentosaceus ferment fish proteins and sugars, producing lactic acid, ammonia, and mineral salts that preserve the fish and impart a characteristic mineral‑rich flavor.
Science
Primary Reaction
Alkaline fermentation of fish proteins and lipids by halophilic lactic acid bacteria, producing lactic acid, ammonia, and calcium‑phosphate deposits
Sensory Profile
Aroma ()
earthymineralbrinyammoniacalumami-rich
Origin & History
Civilization
Vikings
Era