a portable cooking grill includes upright posts , rails , a grilling surface , and a fuel tray . each rail couples a pair of the upright posts . the grilling surface is coupled with the rails and supports food for cooking . the fuel tray is coupled with the rails and receives a volume of fuel . the grilling surface and the fuel tray slide relative to each other to allow them to be relatively moved into distinct positions . in one position , the fuel tray is beneath the grilling surface . in another position , at least a portion of the fuel tray is not beneath the grilling surface .