This hearty Italian bread soup is rich and filling, great for a wintry day. This soup is forgiving and unfussy: you can leave out the carrots and/or celery if you don't have any, you can substitute spinach or escarole for the kale. It will improve in flavor as it sits, but it will also thicken; add water or stock to the desired consistency when reheating. Taken from Tasting Table http://www.tastingtable.com