This one-pot springtime minestrone combines asparagus, peas and kale with a healthy dose of fresh ginger. The ginger is optional, but it energizes the broth. This recipe is fairly flexible overall: You can swap green vegetables according to taste, use vegetable or chicken stock and toss in any type of short pasta. The pesto and Parmesan swirled in at the end provide brightness and richness, but you could also finish the soup with tapenade, sour cream, ricotta or even a splash of your favorite hot sauce.