The Cosmopolitan, also known as the Cosmo, is a popular cocktail that gained fame in the 1990s. It is a vibrant and fruity drink made with vodka, cranberry juice, triple sec, and fresh lime juice. To make a Cosmopolitan, shake all the ingredients with ice in a cocktail shaker and strain into a martini glass. Garnish with a twist of lime peel. Sip on this pink-hued cocktail and enjoy its sweet and tangy flavors.