If using dried shiitake mushrooms, soak mushrooms in warm water for 15-20 minutes.
In a large pot, add oil and sauté onion and garlic over medium heat until onions are translucent.
Add daikon radish, rutabaga, and parsnip, and sauté́ for 3 minutes.
Add ginger, bone broth, thyme, coconut amino (or tamari), salt, and pepper).
Bring to boil and then reduce heat to simmer.
Cover with lid and simmer soup for 20 minutes.
Add Shiitake mushrooms and simmer for 10 more minutes uncovered.
Veggies should be fork tender when done.