What is the effect of chilling a glass before serving cocktails?

Chilling a glass before serving cocktails plays a significant role in the overall drinking experience. By cooling the glass, it helps to maintain the temperature of the drink for a longer period. This is particularly important for cocktails that are meant to be served cold, as it prevents the ice from melting too quickly and diluting the drink. Additionally, a colder glass can enhance the perception of the drink's taste and texture, making the experience more enjoyable for the drinker.

While a chilled glass may impact the aroma to some extent, it is primarily the temperature maintenance and enhancement of the overall experience that makes this practice beneficial for cocktail service.