To smoke bratwurst, preheat your smoker to 225-250°F and add your choice of wood (apple, cherry, or hickory). Place the brats on the grill grate, smoke for 1.5 to 2 hours, turning occasionally until they reach an internal temperature of 160°F. For a crispy finish, sear them on a hot grill or skillet for 1-2 minutes per side.