Place 3-4 cups of wood chips in a small aluminum pan; then pour apple juice or water in to cover the wood chips. Let the wood sit in the liquid for about 30 minutes to prevent the wood from burning during the smoking process and add flavor.
Wrap 2-3 cups of the wet wood chunks in aluminum foil and tightly seal them into a packet. Make tiny holes on one side of the foil packet with a knife to create your own smoke box. (Or use a smoke box😉)
Set up the gas grill for indirect cooking. Light up one or two burners to high heat and leave the other unlit (preferably on the far end).
Next, place the smoke box next to the high heat so it can start smoking fast. Lower the gas temperature to medium-high heat as soon as it starts to smoke. Set the grill temperature to 225-250°F (107-121°C).
Fill a metal or aluminum water pan with water and place it on the unlit side of the grill. As I mentioned, the water pan serves multiple purposes, including adding moisture to the cooking environment and stabilizing the temperature inside the smoker.
Place the sausage directly on the grates on the unlit side. Cook slowly to get the delicious smoky flavors.
Close the grill and smoke for about 1½-2½ hours or until the sausage reaches a safe internal temperature of 160°F (71°C). Optionally, turn once during the cooking process.
Remove the sausages, let them rest for a few minutes, and then serve. Enjoy!