1. Mix cure ingredients and coat venison roast thoroughly. You really want to pack on the cure, leaving no surface uncovered. Place roast in gallon-size plastic bag and stick in the refrigerator.
2. Turn the roast once or twice a day. After a day or two, liquid will start to appear in the bottom of the bag. This is normal. Total curing time depends on the thickness of your roast, but consider five days the minimum.
3. At the end of the curing period, remove the roast from the bag and rinse thoroughly. Soak the roast in a bowl of cold water for a few hours or overnight. Remove roast from soaking water, rinse, and dry thoroughly.
4. Coat the roast with the rub and place in pre-heated smoker. Smoke to 150 degrees.
5. Place the roast on a sheet of tinfoil, splash with a little beef stock and seal foil tightly. Let this steam for about 30 minutes. Remove from tinfoil, slice and enjoy.