Philadelphia, Penn. -- La Colombe Coffee Roasters, a leader in the cold brew category and creator of the iconic Latte on-the-go beverages, brought together the most diehard cold coffee drinkers from across the country and switched out their drink in a blind tasting to introduce them to the “Holy Grail of Cold Brew.” Over 300 people auditioned under the guise of a documentary about diehard coffee fans. Fans ranged from Starbucks obsessed, to Dunkin diehards, to indie cold brew enthusiasts. Each superfan tasted “their favorite coffee drink” and shared how much they loved it, only for...