St. Louis, 2017-Jan-14 — /EPR Retail News/ — Panera Bread (NASDAQ: PNRA) announced today ( January 13, 2017) that its entire U.S. food menu and portfolio of Panera at Home products are now free from all artificial flavors, preservatives, sweeteners, and colors from artificial sources as defined by the company’s No No List, inclusive of 96…