Blend all soup ingredients together in a high-speed blender, in batches if needed. Blend until the pumpkin is completely pureed and the soup has a silky texture.
To serve, pour soup into warm soup bowls. Place 2 teaspoons of marinated portobellos in the middle of each bowl. Decorate each soup with coconut cream, cilantro, and scallion slices.
Combine the shoyu, olive oil, water, and ginger in a small bowl. Add the mushrooms and marinate at room temperature for at least 30 minutes. Drain mushrooms and use as directed.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Roxanne Klein, Roxanne's, Larkspur, CA