What is the standard garnish for a Cosmopolitan?

The standard garnish for a Cosmopolitan is a lime wedge. This choice aligns with the typical flavor profile and ingredients of the drink, which consists of vodka, triple sec, cranberry juice, and fresh lime juice. The lime garnish complements the tartness of the cranberry and the citrus notes from the triple sec, enhancing the overall drinking experience. When served in a martini glass, the lime wedge not only adds visual appeal but also provides an aromatic element that encourages patrons to savor the drink.

While other garnishes like a lemon wedge or cherry may sometimes be used in variations or different cocktails, they do not traditionally represent the standard Cosmopolitan. The olive, commonly associated with martinis, would not enhance the flavors specific to this drink, further underscoring why the lime wedge is the correct choice.