Description
Patience is the key to this soul-satisfying soup chock-full of winter greens. Its depth of flavor comes from cooking the soffritto—a mixture of pancetta, onion, celery, carrots, and the ribs from the chard—for a good 45 minutes and from browning the tomato paste. The result is so savory that there's no need for broth; water, canned tomatoes, and a parmesan rind work beautifully. And because this soup must cook slowly, don't worry about prepping all your vegetables before you begin—you can simply chop as you go.