In a blender or food processor, add vinegar, soy sauce, miso, sugar & pickled ginger; blend until smooth. Slowly drizzle in both oils with blender on. Season to taste & fold in scallions.
Toss the spinach with some of the dressing. Make a napoleon by alternating layers of tofu & spinach in a ring mold or a glass serving bowl. Drizzle the remaining dressing on top. Garnish with toasted sesame seeds.
Serves 4