Cha-An is a second-floor haven for lovers of tea and elegant Japanese snacks. There’s a seasonal “jewelry box” of select desserts, but there’s also a short but notable savory menu (until 7:30 p.m.). Sweet-potato samosas and tea-smoked salmon make delicate appetizers, and you also have the option of one of two Cha-An prix fixe “sets,” featuring a range of dishes, tea, and dessert. Though wine, beer, and sake are available, most guests take advantage of the extensive tea list that includes several dozen offerings, each presented in the appropriate style. The décor is traditional: wooden floors, tables, and booths; bamboo room dividers; rice-paper-shaded lamps giving off a warm glow; and fresh flower sprigs at each table.