The steamed cheeseburger is believed to have been invented at a restaurant called Jack's Lunch in
Middletown, Connecticut, in either the 1920s or 1930s. Jack's Lunch was located at 434 Main Street and operated by Jack Fitzgerald for 44 years. The steamed cheeseburgers at Jack's Lunch were "cooked in a tall copper box filled with simmering water for 18 tin trays of square ground-beef patties." Cheddar cheese was an option at an additional 5 cents. One theory as to what sparked the idea for the steamed cheeseburger is that, back in the 1920s, steaming was being touted as a healthy alternative to frying, in that steamed food was easier to digest than fried food. ==Availability and distribution in central Connecticut==