Tamar Adler’s The Everlasting Meal Cookbook: Leftovers A–Z, which offers inventive and surprisingly practical recipes that incorporate everything from stale doughnuts to next-day burritos to that little bit of dust left at the bottom of a bag of nuts. (Trust me: after becoming a student of Adler’s, you’ll start examining everything from unused pasta water to the slick of oil left in an almost-empty can of cannellini beans for meal potential – and that newfound resourcefulness is part of the fun.)