Came across this info when looking for information on a Diot recipe.
Milk Powder, Dry: Non fat dried skim milk powder is used in a number of sausages. It used generally as a binder and helps cooked sausage retain moisture. It assists in forming irreversible gels (upon heating) that hold water and fat and helps to enhance the flavor of the product.
Milk power is something I have not come across when finding fresh sausage recipes but looking at this why is it not a common ingredient?