Pretzel-bun burgers aren't keeping Ruby Tuesday above water. For its fiscal quarter ended Sept. 3, 2013, the casual-dining chain reported an 11.4% plunge
in same-store sales at company restaurants. That's in spite of the biggest menu refresh in the past seven years. The company introduced eight new products, four of them of the pretzel burger variety,
plus three Crispy Flatbreads and a tempura green bean appetizer.