Technomic’s 2012 Sandwich Consumer Trend Report found that more than half (55%) of Americans are now purchasing grab-and-go sandwiches. By Marilyn Odesser-Torpey, Associate Editor. Just two years ago, the top-selling sandwiches at Famima convenience stores were tuna salad, turkey and cheese and egg salad, all on white bread. Today, the same proteins lead the pack,…