What type of glass is used for serving a Rob Roy cocktail?

The Rob Roy cocktail is typically served in a chilled cocktail glass, which is also known as a martini glass. This glass type is characterized by its wide, shallow bowl and a long stem, allowing for the drink to be served cold while keeping the hand from warming the liquid. The shape of the cocktail glass also enhances the presentation of the drink and allows for the aromas of the ingredients to be concentrated.

In the case of the Rob Roy, which is a classic cocktail made with blended whiskey and sweet vermouth, serving it in a chilled cocktail glass complements its elegant nature and helps maintain the desired temperature. The other glass types mentioned do not offer the same aesthetic or functional benefits for this type of drink.