Fuddruckers is an American, fast casual restaurant chain that specializes in hamburgers. Fuddruckers is known for its large burger patties (up to one pound) and self-service toppings bar. Customers first order a base burger, either plain or with specialty toppings (like sauces, sautéed onions or guacamole). The burger is then provided open-faced to the customer, who then takes it to the...