Lamb Stew (Irish Stew)

Bahan-bahan (6 porsi)

• 2 pounds lamb shoulder (cut into 1 ½" pieces)
• salt and black pepper
• 2 tablespoons vegetable oil (divided)
• 1 large onion (sliced)
• 4 cups beef broth (divided)
• 2 tablespoons butter
• 2 tablespoons all-purpose flour
• 11.2 ounces Guinness beer (1 bottle)
• 2 bay leaves
• 3 carrots (chopped into 3-inch pieces)
• 2 large potatoes (about 1 ½ pounds, peeled and chopped)
• 2 sprigs fresh thyme (or ½ teaspoon dried thyme leaves)
• ¼ cup chopped fresh parsley