Some embodiments described herein are directed to a beverage container including a drinking opening, a closure, and a seal. The closure is configured to selectively close the drinking opening. The seal is coupled to the closure and configured to seal the drinking opening when the closure closes the drinking opening. The closure includes a shaft extending down from an interior of the closure. The seal covers the shaft, and a slit extends through a portion of the seal covering the shaft.

The present disclosure is directed to a lid component for use with a jar and a band. The jar and band may be a mason jar and a band for a mason jar. The lid component is made of an air-impermeable material and is dimensioned and configured to be releasably attachable to the jar by the band and to seal a wide mouth opening of the jar in an air-tight manner. The lid component comprises a one-way valve adapted to allow gas to escape from the jar while, at the same time, prevent air from entering the jar, when the lid component is releasably attached to the jar. The one-way valve comprises a bottom opening and a protruding top wall. The lid component further comprises a sealing wall that extends radially outwardly from the bottom opening. The sealing wall is substantially flat.

The present disclosure is directed to a lid component for use with a jar and a band. The jar and band may be a mason jar and a band for a mason jar. The lid component is made of an air-impermeable material and is dimensioned and configured to be releasably attachable to the jar by the band and to seal a wide mouth opening of the jar in an air-tight manner. The lid component comprises a one-way valve adapted to allow gas to escape from the jar while, at the same time, prevent air from entering the jar, when the lid component is releasably attached to the jar. The one-way valve comprises a bottom opening and a protruding top wall. The lid component further comprises a sealing wall that extends radially outwardly from the bottom opening. The sealing wall is substantially flat.

A flexible pour spout for controlling a flow of fluid. A pour spout includes a proximal portion configured to be inserted into an opening of a container and a distal portion configured to extend outside the container when the proximal portion is inserted into the opening of the container. The proximal portion includes a first sidewall defining a first internal cavity and a collar attached to an external side of the first sidewall. The distal portion includes a second sidewall defining a second internal cavity and a terminal opening located at a distal end of the second sidewall. The second sidewall comprises a bend such that at least a portion of the second sidewall collapses along the bend to reduce a size of the terminal opening in response to applying a pressure to the second sidewall.