How can excess dust or sanitizer be removed from a glass before serving beer?

Rinsing the glass with cold water is the most effective method for removing excess dust or sanitizer before serving beer. This procedure ensures that any residual particles or cleaning agents are washed away, resulting in a clean surface that does not interfere with the beer's aroma or flavors. Cold water rinsing helps to not only eliminate dirt but also ensures that the glass is free from any sanitizer residue that could impart unwanted tastes to the beer.

While options such as using a dry cloth or soaking in warm water might seem plausible, they can leave behind lint or residue, respectively. Air-drying without rinsing may not effectively remove all contaminants either, as airborne particles can settle on the surface of the glass during this process. Therefore, rinsing with cold water is the most hygienic and thorough method, ensuring the glass is clean and ready for optimal beer enjoyment.