Creamy Mushroom Orzotto

Name: Creamy Mushroom Orzotto
Ingredients: 2 ounces dried porcini mushrooms , rinsed; 4 cups boiling water; 3 tablespoons extra-virgin olive oil , divided; 1 pound mixed fresh mushrooms , sliced thin, divided; 1½ teaspoons table salt , divided; ½ teaspoon pepper; 2 tablespoons unsalted butter; 1 shallot , finely chopped; 2 garlic cloves , minced; 1½ cups orzo; 1 teaspoon dried thyme; ½ cup dry white wine; 2 cups chicken broth; 1½ ounces Parmesan cheese , grated (¾ cup); 3 tablespoons sour cream; 2 tablespoons chopped fresh chives