Which cocktail is traditionally served in a coupe glass?

The Martini is traditionally served in a coupe glass because of its classic presentation and history. The catchall term "coupe" refers to the elegant, shallow bowl shape that allows for a wide surface area, enhancing the experience of aromatics in the cocktail. Originally, martinis were served in this type of glass before the introduction of the more commonly recognized martini glass, which has a longer stem and a wider opening. The coupe glass also embodies the elegance associated with this timeless cocktail, making it a preferred choice in upscale bars and cocktail lounges. This association with refinement and tradition is a key aspect of why a Martini is historically linked to the coupe glass, aiding in both presentation and appreciation of its flavors.

The other options, while they may be served in a variety of glassware, do not have the same traditional alignment with the coupe. The Old Fashioned is typically presented in a rocks glass, the Mai Tai is often served in a tiki mug or a highball glass, and the Margarita is traditionally enjoyed in a stemmed glass known as a margarita glass, which has a wider rim.