Greyhound (cocktail) similar cocktail with the name "Greyhound" appears in Harper's magazine in 1945 (volume 191, page 461) thus: ""The cocktails were made of vodka, sugar, and canned grapefruit juice -- a greyhound. This cocktail was served at Greyhound's popular restaurant chain that was located at bus terminals, called 'Post House'."" Before 1945, vodka was an uncommon spirit and most drinks we think of today as "classic cocktails" and which call for vodka, originally would have contained gin. As vodka's popularity grew after the War and gin's popularity waned, many of the popular cocktails persisted, albeit with vodka substituted for gin. The
Sour (cocktail) generally not included in this variation. Sour (cocktail) A sour is a traditional family of mixed drinks. Common examples of sours are the margarita and the sidecar. "Sours" belong to one of the old families of original cocktails and are described by Jerry Thomas in his 1862 book "How to Mix Drinks". Sours are mixed drinks containing a base liquor, lemon or lime juice, and a sweetener (triple sec, simple syrup, grenadine, or pineapple juice are common). Egg whites are also included in some sours. The gin sour is a traditional mixed cocktail that predates prohibition in the United States.