In a large pot, combine the vegetable broth, green onion, grated ginger, carrots, star anise and salt. Bring to a full boil, then reduce the heat and simmer for 15 minutes.
While the broth is cooking, melt the coconut oil in a pan over medium heat. Add the mushrooms and sauté for about 6 minutes, or until tender, stirring frequently. Stir in the tamari and sesame oil and cook over low heat until the sauce thickens and coats the mushrooms, about 1 minute more.
Remove from heat.
Divide the rice noodles between six bowls, then fill each bowl with the broth.
Top each of the bowls with equal parts bean sprouts, a pinch of red pepper flakes, shiitake
mushrooms, cilantro, mint, basil and a lime wedge.