Abstract: A cooking grease disposal bag is formed with a multiply construction and has an internal layer of a heavy gage deformable aluminum foil, an intermediate layer formed by a puncture resistant polyethylene sheet, and an outer layer formed by an insulating paper material. First and second fold lines are designated by indicia on an external front wall of the bag. A permanent adhesive strip covered by a peel off layer is disposed across a top edge of the front wall and a pair of tacky adhesive strips each having exposed tacky adhesive surfaces have a first end secured adjacent a first fold line and a second free end. The tacky adhesive strips may be utilized to temporarily seal the bag, while the permanent adhesive strip may be utilized to permanently seal the bag for disposal.