Chicken Noodle Soup, Cup, Dining Room is the lowest-calorie meal on the Frisch's Big Boy menu: 25 kcal with 2 g protein. The 30 lowest-calorie burgers, sandwiches, main dishes, pizzas, salads and soups, per serving as sold.
Figures are the ones Frisch's Big Boy published for the United States menu in January 2018, from MenuStat 2018 annual data (NYC Department of Health and Mental Hygiene). Carbs exclude fibre, which is listed separately. Menus, recipes and portion sizes change, so check the restaurant’s current menu. Calori is not affiliated with Frisch's Big Boy; names belong to their owners.