Farfalle with Swiss Chard and Fennel Stock

Serves 6 / Make this light, versatile spring or summer pasta dish with any mixture of greens. Prep tip: If you're in a hurry, use low- or no-salt vegetable broth instead of making the fennel stock. Serving tips: Accompany with hunks of bread to soak up the delicious broth. Garnish with toasted or candied nuts.