Vegan Cream of Mushroom Soup With Crispy Shiitake Chips Recipe

Name: Vegan Cream of Mushroom Soup With Crispy Shiitake Chips Recipe
Ingredients: 1/2 ounce dried porcini or morel mushrooms (optional); 1 quart Hearty Vegan Stock or store-bought vegetable broth; 7 tablespoons olive oil, divided, plus more for serving; 1 large leek, white and light green parts only, thinly sliced (about 3/4 cup); 1 small onions, thinly sliced (about 3/4 cup); 3 medium cloves garlic, thinly sliced (about 1 tablespoon); 1 pound white button mushrooms, thinly sliced; 12 ounces shiitake mushrooms, thinly sliced, divided; 1 tablespoon all-purpose flour; 1 tablespoon soy sauce; 1 tablespoon miso paste; 1 cup dry sherry or white wine; 6 sprigs fresh thyme; 2 bay leaves; 2 slices vegan white sandwich bread, crusts removed, bread torn into pieces; 2 tablespoons vegetable or canola oil; Kosher salt and freshly ground black pepper; 1/4 cup thinly sliced scallions, for garnish