Discover Iris De Nuit, a signature cocktail at 1864 Rooftop Bar & Kitchen, created in collaboration with Guerlain Paris to celebrate its new fragrance, L’Heure Bleue. Inspired by the fragrance’s elegant, floral character, Iris De Nuit brings together gin, crème de violette, maraschino liqueur and fresh lemon juice, topped with Lanson Black Champagne for a sparkling finish.