1. In a large pot, combine stock, broccoli, celery, cucumber, and scallions. Cook until broccoli is soft, about 20 minutes.
2. Add parsley, spinach, and watercress. Cook for an additional 3 minutes.
3. In batches, blend ingredients in a blender and return to pot. You can reheat it if needed, but it will remain pretty hot through the blending stage.
You don't need any seasoning! Its amazing!
Source of recipe: I got this recipe from my mother in law.