Abstract: A beverage container includes a vessel and a stopper. The vessel includes a body with a neck portion. The body has an outer wall and an inner wall, and the neck portion defines an open end of the vessel body. The stopper selectively seals the open end of the vessel body in a closed, sealed position and selectively unseals of the open end of the vessel body in an open position. The stopper includes a body having an outer sidewall and a bottom wall. A seal is releasably connected to the body. The seal has a seal sidewall and a rim extending inwardly from the seal sidewall. The seal sidewall sealingly engages the outer sidewall and the rim sealingly overlaps the bottom wall. The outer sidewall together with the seal define an air pathway for the flow of ambient air into an interior of the vessel.