On United flights, which drinks should not be served in Highball glasses?

Highball glasses are typically used for mixed drinks that are served with a large volume of mixer, such as cocktails. When considering the options given, wine is traditionally served in specific types of glassware designed to enhance its characteristics and drinking experience, such as red wine glasses or white wine glasses. These glasses have shapes designed to concentrate the aromas and highlight the flavors of the wine.

Serving wine in a highball glass would not only be unconventional but could also diminish the quality of the experience for the passenger. The tall and narrow shape of a highball glass does not provide the same aeration or exposure as wine glasses do. Therefore, it is appropriate to identify wine as the beverage that should not be served in highball glasses on United flights.