1. USA Standards for Making Fermented Sausages.
Fermented sausages must be fermented within certain time, otherwise product will spoil and might become dangerous.
In the USA the Food Safety and Inspection Service of the United States department of Agriculture requires that the shelf-stable dry sausages be nitrite cured, fermented, smoked, reach a final pH of 5.0 or less, and have a moisture/protein ratio of 1.9:1 or less.