It just occurred to me that Columbo and Horace Rumpole share similar pedestrian eating habits (bangers & Chateau Thames Embankment versus chili & iced tea), and upscale cuisine has been central to at least one of their mysteries (I believe it was "Rumpole a la Carte"). I'm trying to remember if other detectives were associated with the ordinariness of their food preferences . . . many such as Nero Wolfe and Hercule Poirot had gourmet tastes, but how many established rapport with their fans by their "workingman" eating habits?