A smoker attachment 200 for a portable gas grill 10, the smoker attachment 200, 250 including a housing and a support mechanism (201, 300) for the housing above the heat producing section to allow the flavoring of food which is cooked using the gas grill. The housing defines an open topped chamber that is closed by a hinged cover (230) and has an apertured bottom wall segment (214). The housing supports a water tray (234) and has a bottom slotted wall (212, 213, S). The support (201, 300) defines a heat-directing channel which directs heat to the bottom wall.