Abstract: A tamper-evident plastic lid is welded to a plastic container at a welded portion and a detachable, replaceable lid portion is formed by tearing a frangible portion on the lid's skirt thereby leaving a torn tamper-evident, welded lid portion fixed to the container rim. The illustrated lid is a plug-fit lid which has a plug-shaped portion comprising a depressed central panel and an encircling, upstanding wall that engages an inner side of the container rim wall to retain the separated lid portion when it is replaced on the container. An energy director preferably in the form of an encircling bead on the lid initiates the softening of the plastic of the bead for welding with the plastic of the container rim. The preferred frangible portion is a reduced cross-sectional thickness web in a horizontally and radially extending skirt wall on the lid skirt overlying a horizontally and radially extending rim wall on the container rim. The frangible portion may be located radially inwardly of the welded portion.