Strain the water from the mushrooms and add additional water to get 4 cups total liquid. Put the liquid into a soup pot and turn the heat high.
Chop the shitake and maitake mushrooms and add to the pot, with alaria and burdock root, and bring to a boil. Cover and reduce heat to simmer for 5-7 minutes.
Add daikon root, ginger and tofu, and cook 2-3 minutes. Add enoki mushrooms and bok choy.
Put miso paste into a bowl and add hot liquid from the soup to liquefy the miso. Add the miso to the soup and shut off the heat.
Let sit 2-3 minutes. Garnish with minced scallions.