SEATTLE, 2015-1-7 — /EPR Retail News/ — Starbucks today introduced a new core espresso offering with the launch of the Flat White handcrafted espresso beverage, available at participating Starbucks® stores in the US and Canada. The Starbucks® Flat White is an espresso beverage made with two ristretto shots, combined with a thin layer of velvety steamed…