What is the glass type for a Manhattan served "up"?

A Manhattan served "up" is traditionally served in a cocktail glass, which is specifically designed for mixed drinks that are served without ice. The shape of the cocktail glass, often referred to as a martini glass, features a wide bowl and a long stem. This design not only enhances the presentation but also allows for better aeration and chilling of the drink, providing an optimal sipping experience.

Using a cocktail glass for a Manhattan emphasizes the drink's elegant appearance, making it an ideal choice for this classic cocktail, which consists of whiskey, sweet vermouth, and bitters. This glass type is characteristic of drinks that are shaken or stirred with ice and then strained to remove the ice before serving.

In contrast, the other glass types listed do not fit the standard serving for a Manhattan "up." A rocks glass is typically used for drinks served over ice, while a Collins glass is much taller and designed for cocktails with mixers. A mug is generally used for hot beverages or certain types of cocktails, which is not applicable in this context.