This hearty vegetarian Tuscan soup is full of flavor. The crinkly, deep-green leaves of Lacinato kale (also called dinosaur or black kale) are ideal, but any variety of kale will work. Serve with a crusty baguette.
Heat the oil in a 4- to 5-quart pot over medium heat. Add the onion, carrot, celery, and rosemary and cook, stirring occasionally, until the vegetables begin to soften, about 6 minutes. Add the tomato paste and garlic and cook until fragrant, 45 seconds. Add the broth, beans, kale, and Parmigiano rind (if using). Bring to a boil, reduce the heat to medium low, and simmer gently until the vegetables are tender, about 15 minutes.
Stir the cider vinegar into the soup and season to taste with salt and pepper.
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Photo: Scott Phillips