by johngaltsmotor » Mon Jun 30, 2014 4:11 pm
From my experience the protein-lined means that they separate from the finished product easier (you can peel them off).
String effect means they are made with ridges to look like the sausage was hung with a string net around the outside.
Marbled ?? (not sure)
Clear casings are used when you will smoke the sausage and want it to develop the natural color of smoke but still see meat, fat, spices through (looks like natural casing).
Red casings are opaque red like most store bought bologna (at least in the US)
Mahogany casings look like they have already been smoked. They likely call them beef summer sausage as that is the most common use, but you can put any type of meat in them.
Pigs are magical creatures.... they turn vegetables into BACON!!