Hidden away in the upper section of Cottiers Theatre, sits a golden gilded (literally) gem of a restaurant. Named after the Glaswegian architect, William Leiper FRIBA RSA (1839-1916), the eatery not only is a feast for the eyes and belly but subtly celebrates Leiper’s relationship with the buildings name-sake Daniel Cottier (1838–1891). The new restaurant, which showcases…