Potbelly Sandwich Shop is a popular American fast-casual restaurant chain known for its toasted sandwiches, soups, and salads. Founded in 1977 in Chicago, Illinois, the company started as an antique store that began serving sandwiches to customers. The food quickly became the main attraction, and the shop transitioned into a sandwich-focused eatery. Potbelly's menu features a variety of signature sandwiches such as the A Wreck (which includes a mix of salami, roast beef, turkey, ham, and Swiss cheese) and Italian, as well as customizable options with toppings like fresh vegetables and sauces. Alongside sandwiches, Potbelly offers sides such as chips, cookies, and their famous hand-dipped milkshakes. The chain is also known for its cozy, vintage decor, featuring old-fashioned furniture and a warm, inviting atmosphere. Over the years, Potbelly has expanded significantly, operating more than 400 locations in the United States and internationally. With its emphasis on fresh, high-quality ingredients and quick service, Potbelly has carved out a niche in the crowded sandwich market, appealing to those looking for a satisfying, yet casual dining experience.