Charles Feltman, a pieman in Coney Island, is credited with a possible origin for serving sausages in rolls. In 1867, he designed a cart with a stove to boil sausages and a compartment to keep buns, serving what became known as "Coney Island Red Hots." His success led him to lease land in 1871 to open a permanent restaurant, expanding his offerings and popularizing the hot dog as a staple at Coney Island. It was popular uncertainty about exactly what kind of meat was in these casings that ultimately determined that it would be called "hot dog".