“What do you cook for one of the best chefs in the world?” Nadine Levy Redzepi is all too familiar with this question. Her husband, Rene Redzepi, is the chef de cuisine at Noma in Copenhagen. But when he’s not running the two-Michelin star restaurant, he’s sharing meals made by Nadine at home with their children. Her new book “Downtime,” shares the simple meals the family enjoys at home.