Kale: you could also use spinach.Slow Cooker: Sauté ground sausage, onion, garlic and potatoes in a pan, then add to the slow cooker with water and broth. Cook on LOW for 5 hours or HIGH for 3, or until potatoes are tender. Stir in cream and season to taste.Instant Pot: Use the Instant Pot to sauté the sausage, onion, garlic and potatoes on sauté setting. Turn pot off and add water and broth. Cook on High pressure for 4 minutes, with a 10 minute natural release. Stir in kale and cream. Season to taste with salt and pepper.Make Ahead Instructions: The entire soup can be made 1-3 days ahead of time, stored in the fridge.Freezing Instructions: To freeze Zuppa Toscana, make the soup according to instructions but don't add the cream, and don't cook the potatoes until tender. Allow soup to cool, then store in a freezer safe container for up to 3 months. Thaw overnight in the fridge and rewarm on the stove. Stir in cream and cook until potatoes are tender.