D. H. Holmes was a New Orleans department store and later a New Orleans-based chain of department stores. The company was founded in 1842 by Daniel Henry Holmes, after whom it is named. In 1849 he moved his headquarters to Canal Street, where he developed his first department store. [Wikipedia] The store's in-house restaurant was called "Potpourri". In 1989 D.H. Holmes was purchased by Dillard's.
The store issued a cook book called "Bayou Banquet." However, it's not clear that the recipes in it are the same recipes that were used in the store itself and in its Potpourri Restaurant.