Which cocktail is typically served in a tall glass?

The Long Island Iced Tea is typically served in a tall glass, often a highball or pint glass, due to its volume and the combination of multiple ingredients it contains. This cocktail is known for including a mix of several spirits—such as vodka, gin, rum, tequila, and triple sec—along with sweet and sour mix and a splash of cola, resulting in a substantial drink that requires more space than other cocktails.

In contrast, the other drinks listed have their own distinct glassware. A Martini is traditionally served in a stemmed martini glass, which has a wide bowl and a narrow base, ideal for elegance and showcasing the drink's appearance. A Margarita is generally served in a stemmed or non-stemmed margarita glass, which has a flared rim designed to accommodate the drink's signature salt or sugar. The Old Fashioned is served in a short, sturdy rocks glass, perfect for the stirred nature of the drink and providing a proper presentation for its spirit and garnish.

The Long Island Iced Tea’s tall glass perfectly accommodates the layered look and ample quantity of ingredients, making it the most appropriate choice for this question.