Cosmopolitan
The classic Cosmopolitan is a very simple drink and it quickly became one of the most popular cocktails of all time. It's peak was in the 1990's because of its multiple appearances in the HBO show, Sex and the City, though the story begins a little earlier.
One of the first references to the Cosmopolitan is a gin, Cointreau, lemon, and raspberry syrup mix that was published in 1934 in the Pioneers of Mixing at Elite Bars 1903-1933. Yet, it was not until the 1970's that the drink really took off and began to form its modern vodka-cranberry version. At that time, bartenders all over the U.S. were experimenting with a cranberry version of the Kamikaze and, as is common in cocktail origins, many have made the claim to creating the Cosmo that we know today.
Most bartenders know how to make this light, fruity cocktaili, making it a great choice for a casual night out. There are hundreds of variations on the Cosmo, some use more or less cranberry juice, some triple sec instead of Cointreau, and some include a citrus vodka.