Add the soup ingredients to a large crockpot and cook for 7-8 hours on low heat. About 20 minutes before serving add the additions. Including only half the scallions. Reserve the other half for garnish. Cook for 20 min.
Meanwhile make the Ginger Soy Sauce. Combine all ingredients in a small bowl and whisk well. Serve a spoonful of the sauce with each bowl of soup and garnish with the reserved green onion, serve immediately.
Nutrition calculation is an estimation only. If you need nutritional calculations for medical reasons, please use a source that you trust.