The simplest way to do it is to just hold it underneath a faucet and allow warm water to run through it for 30 seconds to minute after you have finished using it. That will typically clear any of the liquid that is left over in the decanter. But sometimes you may find some residue built up, or even sediment stuck in the mesh screen. An Aerator Cleaning Brush
is really the optimal tool to ensure your aerator is as clean as can be and working properly. Using this cleaning brush will ensure that each wine which flows through your aerator maintains its integrity and does not infuse with any remnants of a prior wine that was previously aerated.