Place all ingredients in a large soup pot except for the miso and greens, and bring to boil. Lower heat to simmer on a "low boil" for at least one hour
When done, take off heat. Mix 1-2 tablespoons miso with hot water until pasty. Add to pot and stir in until blended. Taste to see if more is needed
Add greens, if using, just before serving and mix well. They will wilt down, and easy way to get more "greens" in your day.