In a saucepan, heat the oil over medium-high heat. Add the ginger, radish and mushrooms and cook for 5 to 10 minutes, or until the mushrooms are softened. Add the water and bring the mixture to a simmer. Reduce the heat to low and add the miso, stirring until it is dissolved.
Remove the soup from the heat. Add the scallions and tofu, and let the soup sit, covered, for 5 to 10 minutes. Serve hot, garnished with the nori strips.
In a saucepan, heat the oil over medium-high heat. Add the ginger, radish and mushrooms and cook for 5 to 10 minutes, or until the mushrooms are softened. Add the water and bring the mixture to a simmer. Reduce the heat to low and add the miso, stirring until it is dissolved.
Remove the soup from the heat. Add the scallions and tofu, and let the soup sit, covered, for 5 to 10 minutes. Serve hot, garnished with the nori strips.
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