If you are grinding your own meat, keep the venison, beef, pork, pork back fat, grinder parts, and mixing bowl very cold before starting. Freeze the meat for about an hour before you grind it.
Grind the chilled meat and pork back fat through the desired plate, keeping the mixture cold throughout the process. Use a coarse plate for the first grind and a fine plate for the second grind.
Combine the cure, Fermento, nonfat dry milk powder, and seasonings, and add it to the meat. Then mix the ice-cold water into the ground meat until the mixture becomes tacky and well-bound.
Fold in the diced extra sharp cheddar, white cheddar, and dehydrated jalapenos until evenly distributed.
Stuff the mixture into 17mm collagen snack stick casings, taking care not to overstuff or leave large air pockets.
Arrange the stuffed sticks on clean wire racks over trays, leaving space between them. Pat away surface moisture and refrigerate uncovered at 40°F or below until the casings feel dry to the touch. Keep them refrigerated while you preheat a Grilla Mammoth or another pellet smoker capable of holding 180°F, such as a compatible Traeger model, to 180°F. For an electric smoker capable of lower temperatures, see the Electric Smoker Method in the notes.