Old Fashioned glass
The Old Fashioned glass, lowball glass, or rocks glass is a short tumbler used for serving an alcoholic beverage, such as whisky, with ice cubes (“on the rocks”). It is also normally used to serve certain cocktails, such as the Old Fashioned, from which it receives its name.
Old Fashioned glasses typically have a wide brim and a thick base (or tunc), so that the non-liquid ingredients of a cocktail can be mashed using a muddler before the main liquid ingredients are added.
Old Fashioned glasses usually contain 6–10 US fl oz (180–300 ml). A double Old Fashioned glass (sometimes referred to by retailers as a DOF glass) contains 12–16 US fl oz (350–470 ml).
References
External links
The dictionary definition of tumbler at Wiktionary
Cocktails served in Old Fashioned Glasses
Old Fashioned Whiskey Glasses