Few leafy greens have experienced the cult status that kale has enjoyed in the past decade. We may have moved beyond 'kale mania' but devotees still revere it for its versatility and great taste, as well as its much-vaunted nutritional value. It's great in wintry dishes such as Lentil Soup with Carrots, Lemon and Greens or try it in a Winter Herb Salad.