Pork And Mushroom Ragout

Name: Pork And Mushroom Ragout
Ingredients: 2 cups chicken stock or canned low-sodium broth; 1/2 cup dried porcini mushrooms (about 1 ounce); 2 tablespoons olive oil; 1 1/2 pounds pork tenderloin, trimmed of all visible fat and cut into 1-inch cubes; Salt and freshly ground pepper; 1 medium onion, finely chopped; 4 garlic cloves, minced; 1 teaspoon minced sage; 1 2/3 pounds fresh Portobello mushrooms, caps and stems cut into 1/2-inch pieces; 1/2 cup dry white wine; One 28-ounce can whole peeled tomatoes, drained and coarsely chopped; 1 tablespoon tomato paste; 1/4 cup finely chopped flat-leaf parsley