Soak Beans: Soak the borlotti beans overnight in cold water to soften.
7 ounces dried borlotti beans
Cook Beans: Drain the beans and boil them in a large pot with the garlic cloves (peeled) and sage leaves for about 2 hours, or 1 hour in a pressure cooker. Salt the water only at the end of cooking.
2 cloves garlic, 5 sage leaves, Salt
Prepare Broth: Remove some beans with a slotted spoon and puree the rest through a sieve to create a thick broth.
Sauté Vegetables: In another pot, gently cook the chopped carrot, celery, and onion in a splash of olive oil until softened. Add the chili pepper here if using.
1 carrot, 1 onion, 1 celery stalk, Olive oil, 1 small chili pepper
Prepare Kale: Clean the kale by removing the tough ribs and wilted leaves, then wash thoroughly. Chop the leaves and add them to the sautéed vegetables.
7 ounces black kale
Simmer: Add a few ladles of bean broth and tomato paste to the pot. Cook for about 10 minutes, or until the kale is tender.
4 tablespoons tomato paste
Thicken with Polenta: Move the pot off the heat and stir in the reserved whole beans and a slow stream of polenta, continuously stirring to prevent lumps. Return to the heat and cook according to the polenta package instructions, about 5 minutes, adding more broth if needed.
7 ounces instant polenta
Serve: Keep the Bordatino somewhat soupy, similar to semolina in consistency. Serve hot, drizzled with olive oil and a generous sprinkle of freshly ground black pepper.
Black pepper