Rosa Lewis (née Ovenden; 1867–1952) was an English cook and owner of The Cavendish Hotel in London, located at the intersection of Jermyn Street and Duke Street, St. James.[1] Known as the "Queen of Cooks", her culinary skills were highly prized by Edward VII, with whom she was rumoured to have had an affair in the 1890s.[2][3] She was also called "The Duchess of Jermyn Street."[4][5]