Sausage, White Bean & Kale Soup Recipe

I prefer to use a spicy italian sausage for this soup but other sausages can certainly be used as you prefer.
This soup can be further enriched at the end by adding some milk or cream but it isn't necessary. Reheats really well for next day servings. Serve up with a crusty loaf of bread and its a hearty meal all on its own. Don't leave out the lemon zest as it really brightens this and complements the kale.