Obviously, making sausage from fresh meat, then freezing is optimal as time above 40 degrees and temp transitions are limited...But...If you slaughter a whole Hog or shoot a Moose, it may not be possible to make hundreds or pounds of sausage from fresh meat. You are going to freeze and thaw as needed over the course of the year. Proper handling becomes important. Thaw meat in the refer, work in small batches, keep everything cold, as close to 40 degrees as possible and freeze finished sausage in single layer packages. When time to eat thaw in the refer and cook to an IT of 165. If Cured and smoked, do so BEFORE the refreeze...These techniques and single refreeze is backed by the USDA and other authorities...JJ