The restaurant was opened by brothers John and Peter Delmonico from Ticino , Switzerland . In 1831, they partnered with their nephew Lorenzo Delmonico, who became responsible for the restaurant's wine list and menu design. In 1862, the restaurant hired Charles Ranhofer , who was considered one of the finest chefs of the time. During the early 1850s, the restaurant hosted the New England Society of New York, a society that hosted some of the greatest orators of the day. In 1860, Delmonico's catered Edward VII 's Grand Ball at the Academy of Music on 14th Street.