How to Make It
In a large bowl, toss the short ribs with the flour. In a large enameled cast-iron casserole, heat the oil. Working in batches, cook the short ribs over moderately high heat until browned all over, about 6 minutes per batch. Discard the oil.
Return the meat and any juices to the casserole. Add the wine and boil until reduced by half, 8 minutes. Add the stock and bring to a simmer. Cover and cook over low heat until the meat is tender, 2 hours.
Skim any fat from the stew. Stir in the carrots, potatoes, parsnips, onion, mushrooms, thyme and sage. Cover and simmer over low heat until the vegetables are tender, about 35 minutes. Season with salt and pepper and serve.