Starbucks introduces its first Unicorn Frappuccino® blended beverage   Seattle, 2017-Apr-19 — /EPR Retail News/ — The elusive unicorn from medieval legend has been making a comeback. Once only found in enchanted forests, unicorns have been popping up in social media with shimmering unicorn-themed food and drinks. Now Starbucks is taking the trend to a new level…