Guinness Beef Stew

Name: Guinness Beef Stew
Ingredients: 1 (3½ to 4-pound) boneless beef chuck-eye roast, pulled apart at seams, trimmed and cut into 1½-inch pieces (or use stew beef already cut up); 3 tablespoons vegetable oil; 2 yellow onions, chopped fine; ¼ teaspoon salt; 1 tablespoon tomato paste; 3 garlic cloves, minced; ¼ cup all-purpose flour; 3 cups chicken stock; 1 (12-ounce) bottle Guinness Draught, divided; 5 teaspoons dark brown sugar; 1 teaspoon minced fresh thyme; 1½ pounds Yukon Gold potatoes, unpeeled, cut into 1-inch pieces; 1 pound carrots, peeled and cut into 1-inch pieces; 2 tablespoons minced fresh parsley