Owamni by the Sioux Chef co-owner Sean Sherman is a James Beard and Julia Child awards winner, with one of the country’s most-talked-about restaurants, but he feels like his true life’s work is just …Owamni by the Sioux Chef co-owner Sean Sherman is a James Beard and Julia Child awards winner, with one of the country’s most-talked-about restaurants, but he feels like his true life’s work is just …