Sloppers generally include grilled buns and are often topped with freshly chopped onions and sometimes french fries.
[4][3] According to the story, the name slopper was derived from a comment by a customer stating that the dish looked like slop.
[4] The website attributes the creation of the slopper to brothers Johnnie and Joe Greco, who had previously owned the tavern.
The show interviewed persons involved in restaurants which serve sloppers, as well as Juan Espinosa, a former editor of the Pueblo Chieftain.
Espinosa discussed the slopper's origin, attributing it to the Greco brothers who owned Johnnie's Coors Tavern from 1935 until 1983 when it was sold to the Gray family.