Walgreens has introduced Deerfield Trading???s Old Fashioned Soda with real cane sugar in such flavors as root beer and strawberry cream, and the company???s Duane Reade stores stock DR Delish sparkling beverages in pomegranate and blood orange, among other flavors.Nontraditional flavors are a driver in the category. ???We get excited about developing the next flavor,??? said David Yudkin, co-owne