Country-Style Soup

INGREDIENTS

• Freshly grated Parmesan cheese
• 1 small celery stalk, finely chopped
• 1/2 head Bibb lettuce, cut into 1-inch pieces (about 2 cups)
• Extra-virgin olive oil
• 1/2 cup dried fava beans
• 1 large onion, finely chopped
• 1 carrot, peeled, finely chopped
• 8 ounces savoy cabbage, cut into 1-inch pieces (about 4 cups)
• 6 cups water
• 1/2 cup dried Great Northern beans