Rotatable drink opening cover

A method to rotatably cover a drink opening in the lid of a beverage container, said beverage container having a lid, a lip disposed peripherally around said lid and extending above said lid, a shearable tab, and a tab actuator pivotable to displace said tab and expose said drink opening, said cover being dimensioned and configured to sit rotatably under said tab actuator, on said lid, and between said rivet and said lip, said cover having a bottom surface larger than the drink opening, said cover having at least a recessed top portion, said recessed top portion having an inclined surface adapted to receive and engage said tab actuator, said tab actuator being pivotably attached to said lid by a rivet centrally disposed on said lid, said method comprising:

• raising said tab actuator to displace said shearable tab and thereby expose said drink opening in said lid,
• depressing said tab actuator until it is returned substantially to it's original planar relationship with said lid,
• aligning said recessed top portion with said tab actuator and placing said cover on said lid thereby engaging said tab actuator with said recessed top portion,
• whereby being subjected to an external force, said cover will fully rotate in concert with said tab actuator about said rivet to cover and uncover said drink opening.