This berry orange vodka martini is the perfect drink for a hot summer day. As opposed to buying premade raspberry or cranberry juice, this homemade syrup has so much more flavor. The history of the Orange-Berry Vodka Martini cocktail is not that straightforward. Some say it was invented by a bartender in Philadelphia while others claim that it was created by a bartender in Manhattan. The only thing we know for sure is that this drink has been around for over 100 years and it has been continuously evolving through time.