Abstract: An assembly for selectively aerating a beverage. The assembly includes a body, a diverter movable between first, second, and third positions, and an aerator in fluid communication with the diverter, the aerator including a central outlet and aeration outlets. When the diverter is in the first position, the diverter is positioned such that the beverage flows through the body and the central outlet while bypassing the aeration outlets. When the diverter is in the second position, the diverter is positioned such that the beverage flows through the aeration outlets while bypassing the central outlet. When the diverter is in the third position, the diverter is positioned such that the beverage flows through the body, a first portion of the beverage flows through the central outlet while bypassing the aeration outlets, and a second portion of the beverage flows through the aeration outlets while bypassing the central outlet.