I believe you're thinking of Cpl. (later Sgt.) Max Klinger, who regularly raved about the hot dogs from Tony Packo's.

Jamie Farr, who played Klinger on M*A*S*H, was a native of Toledo so when he had the chance to ad-lib a little of Klinger's personal history, he made him from Toledo as well. According to Tony Packo's website:

In the episode that made Packo's future, a man playing a television newsman talked to Klinger about his hometown. Farr wrote a little local color into his reply. The lines read, "If you're ever in Toledo, Ohio, on the Hungarian side of town, Tony Packo's got the greatest Hungarian hot dogs. Thirty-five cents..." Thus a new epoch began. The name appealed to the scriptwriters, who wrote Packo's into five subsequent episodes. In one show the mobile hospital unit sent to Packo's for sausage casings to be used in a blood-filtering machine.