Sandwich innovations keep restaurant customers coming back for more, finds Technomic

Sandwich innovations keep restaurant customers coming back for more, finds Technomic PR Newswire READING, England, July 25, 2012 READING, England, July 25, 2012 /PRNewswire/ -- Sandwiches are the cornerstone of lunch and dinner menus at both limited- and full-service restaurants, where they are offered more than any other type of entree.