Greyhound

The Greyhound is a simple two-ingredient cocktail of vodka (or gin) and grapefruit juice, served over ice in a highball glass. When a salted rim is added to the Greyhound, the cocktail becomes known as a Salty Dog — the salt enhances the grapefruit's bitterness and sweetness simultaneously, making it a popular brunch and warm-weather cocktail.

The Greyhound is believed to have originated in the United States in the 1930s or 1940s, with some accounts attributing its creation to the Greyhound bus terminal cafés where grapefruit juice was a common mixer. The drink gained widespread popularity through Harry Craddock's Savoy Cocktail Book and later through American pop culture, remaining a refreshing staple on brunch menus.

While vodka is the contemporary standard for a Greyhound, the original recipe often called for gin, which adds botanical complexity and juniper bitterness that contrasts interestingly with the grapefruit's natural tartness. Vodka produces a cleaner, more fruit-forward drink that lets the grapefruit be the star, while gin creates a more layered and complex flavor profile. Both versions are entirely traditional.