Old Fashioned glasses, also known as rocks glasses, are a staple in the world of cocktails, exuding an air of sophistication and timeless charm. Characteristically short and stout, these glasses typically hold between 6 to 10 ounces and boast a wide brim and thick base, making them ideal for serving spirits neat or cocktails with a large ice cube. Their design is not just for aesthetic appeal; the thick base is intended to withstand muddling, a technique often used in making cocktails like the eponymous Old Fashioned, where sugar and bitters are mashed together before whiskey is added.

The wide brim serves a dual purpose: it enhances the sipping experience and allows for the aroma of the cocktail to waft, enriching the flavor perception. This glassware is not only functional but also versatile, used for a myriad of cocktails beyond the Old Fashioned, such as the Whiskey Sour or even creative non-alcoholic beverages. Its robust construction and elegant simplicity make it a favored choice for both casual drinkers and connoisseurs alike, proving that the Old Fashioned glass is a timeless piece in the art of cocktail presentation.