Brad Kilgore's Design District lounge, Kaido, has a secret. Behind a false wall lies Ama, a hidden gem accessible only with a guide who escorts guests into a small boxlike room where they're instructed to refrain from taking pictures. After they agree, guests are given access to this small bar named after female pearl divers in Japan. The bar specializes in Japanese whisky and sodas, presented in a tall glass with a precise cylinder of ice. The intimate, $120 "amakase" dinner that follows is by reservation only. It's chef Kilgore's own interpretation of omakase dining. The bar, which grants entry by a strict reservation-only policy, also offers bartender Nico DeSoto's upscale take on the humble pickleback: Japanese whisky followed by a glass of chilled shiitake broth. Hours are by reservation only beginning at 7 p.m.