Description
Controlled anaerobic fermentation of Baltic herring producing intense umami compounds through bacterial proteolysis.
Technical
Halophilic bacteria (primarily Haloanaerobium spp.) break down fish proteins into free amino acids (glutamate, aspartate) and biogenic amines (histamine, cadaverine) during 6-12 month brine fermentation. The high salt concentration (15-20%) inhibits pathogenic organisms while allowing halotolerant microbes to thrive.
Culinary Significance
Creates a pungent preserved fish product with concentrated savory flavor, traditionally eaten with crispbread and potatoes to balance intensity.
Science
Primary Reaction
Proteolytic fermentation
Parameters
Temperature
18°C optimal
10°C to 25°C range
Time
9 months
6 months – 18 months
Equipment
Wooden barrels (traditional)Food-grade plastic drumsAnaerobic seals