Chef Meherwan Irani’s expertise with Indian spices extends past the masala-tinged fish and cumin-and-chile-seasoned lamb burgers he serves at his restaurants around Asheville, Atlanta, and now Charlotte, where the four-time James Beard Award nominee is opening a third iteration of Botiwalla at the new Optimist Hall. This wintertime treat mingles his Spicewalla chai tea blend with rum and North Carolina amaro.