RIBOLLITA

Steps:

• Combine 8 cups water, beans, sage, and sliced garlic in large saucepan. Bring to boil; reduce heat to low, cover, and simmer until beans are tender, stirring occasionally and adding more water by 1/4 cupfuls to keep beans submerged, 2 to 2 1/2 hours, depending on age of beans. Add 1 teaspoon sea salt; simmer 10 minutes. Uncover and cool beans in liquid. DO AHEAD: Can be made 1 day ahead. Cover and chill in cooking liquid.
• Heat 3 tablespoons oil in large pot over medium heat. Add onion; sprinkle with sea salt. Cook until onion is translucent, stirring often, about 5 minutes. Add chopped garlic; stir 2 minutes. Add celery, carrot, potato, fennel, and thyme; cook until vegetables are tender and begin to turn brown in spots, stirring often, 15 to 18 minutes. Add kale, chard, cabbage, tomatoes, Parmesan rind, 5 cups water, and 1 teaspoon sea salt. Bring to boil; reduce heat to medium-low, cover, and simmer until vegetables are very tender, about 1 1/2 hours. Add beans with cooking liquid and crushed red pepper. Add 2 cups broth. Season with salt and generous amount of pepper. DO AHEAD: Can be made 1 day ahead. Cool, cover, and chill. Rewarm before continuing.
• Add bread to soup and simmer, stirring often to break up bread into smaller pieces and adding more broth by 1/2 cupfuls to thin, if desired. Season with sea salt and pepper.
• Divide ribollita among bowls, drizzle with oil, and serve.
• Also called Tuscan kale, dinosaur kale, lacinato kale, or cavolo nero_, black kale has long, narrow dark green leaves; available at some supermarkets and farmers' markets._