A method of manufacturing a vented tamper evident closure of the J-hook type to a container involves a closure of the type including a base, a downwardly depending sidewall portion and a tamper evident band. The tamper evident band is frangibly connected to the sidewall portion and includes a main band portion and a J-hook retention member that includes a plurality of retaining elements and a corresponding plurality of flexible web elements. Advantageously, the retention member is originally molded in a first position wherein it is positioned substantially beneath and in alignment with the main band portion of the tamper evident band. This molding position creates substantial manufacturing advantages. When the closure is installed onto the container, the retention member is circumferentially compressed and folds inwardly as it is moved to a second, engaged position wherein it is bent upwardly and inwardly to engage the container. The substantial circumferential compression of the retention member is enabled by the provision of the flexible web elements. In addition, ventilation openings are preferably defined within the flexible web elements. The ventilation openings provide a dual benefit in that they further promote efficient moldability of the closure and that they permit the entire container assembly, including the closure, to be washed after packaging to remove any food material that may be left after filling permit the closure.