You will need a 12" cast iron Dutch Oven with legs and 20 or more coals. As you use the coals, you will need to start more so that you have a continuous supply of white, hot coals to use as the others burn out.
When cooking, every 15 minutes turn the pot ¼ turn clockwise and the lid ¼ turn counterclockwise. Add more white hot coals as necessary to keep the temperature steady.
Note: Venison has very little fat compared to beef and will be dry and tough if overcooked. Venison can be soaked in milk or buttermilk to remove some of the wild or "gamey" taste. Cooking the venison in apple or cranberry juice also helps to lessen the "gamey" flavor.