Step 1

Preheat oven to 350 degrees. In a Dutch oven, heat oil over medium-high heat. Sprinkle roast all over with 1 teaspoon salt and 1/2 teaspoon pepper. Place in pan, and brown on all sides, about 10 minutes.

Step 2

Turn meat fat side up. Add stock, wine, if using, onions, garlic, bay leaves, and thyme. Stir in tomato paste. Bring to a simmer, cover; put in the oven, and roast for 3 hours. Add carrots and potatoes, and cook until vegetables are tender, about 1 hour more.

Step 3

Transfer the roast, carrots, and potatoes to a platter. With a spoon, skim the fat off the surface of the cooking liquid. Cut the roast into thick slices, and serve with the vegetables. Pass the pan juices separately.