What type of glass is typically used to serve a Sidecar cocktail?

The Sidecar cocktail is traditionally served in a cocktail glass, often referred to as a 'martini glass' as well. This type of glass is designed to showcase the cocktail and its garnishes, making it visually appealing while also providing an elegant touch to the drink's presentation. The shape of the cocktail glass, with its wide rim and tapered bowl, allows the aromas of the cocktail to be enjoyed as one takes a sip, enhancing the overall drinking experience.

In contrast, other glass types listed are not suitable for this specific cocktail. A Collins glass is taller and often used for drinks served with soda or those that are more refreshing and diluted. A highball glass is typically used for spirits mixed with a larger quantity of non-alcoholic mixers, focusing on volume rather than the purity of the drink. An old-fashioned glass, also known as a rocks glass, is generally used for drinks that are served on the rocks or for cocktails that emphasize a strong spirit, not for the delicate balance found in a Sidecar.