Abstract: A stopper for use with an individual beverage container is disclosed. The stopper has a generally tubular side wall with an upper edge and a lower edge. The side wall is dimensioned to fit snugly in the neck of the beverage container with a pressure fit. A bottom extends inwardly from the side wall. A flat upper portion is integrally attached to the bottom and is spaced upwardly from the bottom. An aperture is formed in the bottom or the flat upper portion. In addition, a vent hole is formed in the bottom or the flat upper portion. Preferably the flat upper portion is spaced from the side walls thereby forming a trough therebetween. Preferably the aperture is formed in the bottom and dimensioned to receive a straw snugly therethrough. Preferably the flat upper portion is divided into a first and second upper portion with a channel therebetween, with the channel being contiguous with the aperture and dimensioned to receive an upper portion of the straw when in a stored position.