Using a charcoal chimney or lighter fluid, light 6-8 pieces of lump charcoal and let them come to a full burn. Add to your firebox and preheat the smoker to roughly 225°F (105°C), adding charcoal to the fire as necessary.
Place a metal pan filled with water at the end of the smoker’s cooking chamber closest to the firebox. Place ribs directly on the grate of your cooking chamber and close the smoker. Open the vents at both ends of the smoker.
Add a chunk or two of smoking wood to the firebox each half hour to create a stream of thin but visible smoke that is somewhat blue in appearance. Too much wood may result in thick, gray smoke. If this happens, open the smoker and clear the smoke out, waiting to close it until you’re able to achieve manageable smoke again.
At 170°F (75°C), remove the ribs from the smoker and place onto a large sheet of aluminum foil. If using barbecue sauce, apply now with a basting brush. Wrap the aluminum foil up to enclose the ribs, and place them back in your smoker for an additional 30 minutes.
Related Link: https://tasty.co/recipe/bbq-smoker-pork-ribs