In the embodiment of FIGS. 11-13, the gas dispenser 34 is comprised of a flow conduit 50 extending upwardly from the floor 33 within the cavity 25 of the container 20. A pump 30 is fluidly connected to the flow conduit 50 for supplying gas 44 to the flow conduit 50. A dispenser arm 55 is fluidly connected to the flow conduit 50; with the dispenser arm 55 being adapted to dispense the gas 44 through the liquid 40.