Preparation
1. Position a rack in the center of the oven and preheat to 300°F.
2. Heat the oil in a large (at least 6-quart) Dutch oven or flameproof casserole over medium-high heat. Season the short ribs with the salt and pepper. In batches, without crowding, add the short ribs to the pot and cook, turning occasionally, until browned on all sides, about 8 minutes. Using tongs, transfer the ribs to a platter.
3. Pour off all but 2 tablespoons of the fat from the pot. Add the onion, chopped carrot, and celery to the pot and reduce the heat to medium-low. Cover and cook, stirring often, until the vegetables are softened, about 5 minutes. Add the garlic, herbes de Provence, and flour and stir until the garlic gives off its aroma, about 1 minute. Stir in the wine and bring to a boil over high heat, stirring up the browned bits on the bottom of the pan with a wooden spoon. Add the broth, tomatoes, and bay leaf. Return the short ribs, and any juices, to the pot. Add cold water as needed to barely reach the top of the ribs and bring to a boil over high heat.
4. Cover tightly, transfer to the oven, and bake, stirring occasionally to change the position of the ribs, until the meat is falling-off-the-bone tender, about 2 1/2 hours. (I add a little water about halfway through to make it a stew, but this isn't necessary) During the last 15 minutes, add the baby carrots and your potatoes if you go my route!.
5. Transfer the short ribs to a deep serving platter and cover with aluminum foil to keep warm. Skim off the fat from the surface of the cooking liquid, and discard the bay leaf. Bring to a boil over high heat and cook until the liquid is reduced to a sauce consistency, about 10 minutes (the exact time depends on the size of the pot). Add the olives and cook to heat them through, about 3 minutes. Season the sauce with salt and pepper. I haven't done this, preferring to leave it as a stew, but I'll try the reduction next time!
6. Spoon the sauce with the carrots over the ribs, sprinkle with the parsley, and serve hot. A nice loaf of bread is a welcome addition on the side!