Preheat the oven to 300°F.
Pat dry:
Season with:
Heat in a Dutch oven over medium-high heat:
Add the lamb and brown on all sides. Remove the lamb from the pot and pour off all but 2 tablespoons of oil (add more oil if needed) and reduce the heat to medium. Add:
Cook, scraping up any browned bits, until the vegetables are softened, about 10 minutes. Add:
Return the lamb to the pot and bring to a simmer over high heat. Cover, transfer to the oven, and cook until the meat is fork-tender, 2 to 2 ½ hours. Remove the meat from the pot and keep warm. Skim off the fat from the surface of the sauce and remove the herb sprigs and bay leaf. Taste and adjust the seasonings. Cut the strings from the meat and serve it in chunks or slices, with plenty of sauce.