An aerator includes an expansion chamber. The expansion chamber is defined as having a top portion and a bottom portion. The bottom portion is configured to engage an opening of an uncorked wine bottle. The top portion is disposed above the opening of the uncorked wine bottle. The expansion chamber is configured to be in fluid communication with an inside of the uncorked wine bottle. A gas conduit has a proximal end in fluid communication with a distal end. The gas conduit passes through the bottom portion of the expansion chamber and the distal end is disposed below the bottom portion of the expansion chamber. The proximal end is disposed above the bottom portion of the expansion chamber. A gas source is in fluid communication with the proximal end of the gas conduit. The expansion chamber is configured to temporarily contain an expansion of wine bubbles during an aeration process.