Dried mushrooms give this rich red-wine sauce an almost meaty flavor. Look for them in the produce department of well-stocked supermarkets or specialty grocers. If you're not a fan of salmon, try the recipe with halibut instead. Serve with barley tossed with parsley and steamed broccolini. To double: Prepare a double batch of sauce in the large skillet, increasing reduction time as needed. Cook 2 1/2 pounds of salmon in two batches, adding oil as necessary.