Subway’s Chipotle Cheesesteak Sandwich comes on Sunflower Crunch bread. Panera Bread’s Chipotle Chicken Avocado Melt is on Black Pepper Focaccia. Jack in the Box’s Stacked Grilled Cheese Burger is a hybrid burger and sourdough grilled cheese sandwich. These examples of trending foodservice sandwich offerings illustrate the creativity that characterizes today’s bread category. While sales in many segments of the bread market are flat at best, there’s an unprecedented…