Includes 12 (15 fl oz) cans of Starbucks Doubleshot Energy Drink Coffee Beverage, Vanilla flavor. Starbucks Doubleshot Energy Drink: It all starts with rich, bold Starbucks coffee blended with vanilla flavor. Drink up. Then own the day. Starbucks Doubleshot Energy Drink Coffee Beverage is made with B Vitamins, Ginseng, and Guarana. Starbucks Doubleshot Energy Drink: Coffee With a Boost