Disclosed herein is an assembly for selectively aerating a liquid including a base member a reservoir adapted to receive the liquid. The assembly also includes a support member non-rotatably coupled to the base member and a diverter member coupled to the support member and rotatable between a first diverter position and a second diverter position. The diverter member has at least one primary aperture and at least one secondary aperture. The assembly additionally includes an aerator member non-rotatably secured to the diverter member, the aerator member having an aeration aperture. In the first diverter position, a portion of the liquid in the reservoir flows through the primary aperture. In the second diverter position, a portion of the liquid in the reservoir flows through the secondary aperture, and though the aeration aperture.