I just buy the pre-mixed spice packets and add that to my ground venison. You can use any sausage recipe that you would use for pork sausage, it doesn't matter.
I add a little pork fat to my ground venison, but not as much as others, only about 10 %. Just look for pork butt or pork shoulder in the meat aisle.
To put it in casings you'll need a stuffer. I just make patties. HOpe this helps!
-SHOOEY!