Former Top Chef contestant Leah Cohen grew up in the U.S., but worked and lived in Southeast Asia to pursue her cooking passions. After returning she opened Pig and Khao, a hugely successful New York City restaurant. She speaks to Jeff Glor about her new cookbook, “Lemongrass and Lime,” a tribute to her parents and a guide for home chefs who crave big, bold flavors for the “CBS This Morning: Saturday” series, The Dish.