A supermarket shelf stocked with tubs of ready-made Panera soup - MDV Edwards/Shutterstock Some people know it's fall when the PSL comes out, but if you're like me, it's all about Panera's best soup.
Soup tends to be a hot-selling item this time of year, but operators of soup-focused restaurants are expanding other parts of their menus to avoid being left out in the cold as the category loses some ...