Most meat benefits from long slow cooking. I've a friend who will stick a leg of lamb in the oven at a high heat for an hour and then complain that it's tough. I'll either put a joint in a high heat for ten minutes to brown and then turn the temperature right down or brown the joint in a frying pan and then put it into a slow oven for two to three hours and then take it out of the oven and wrap it in foil for 15-20 minutes. the meat will fall off it. I know it costs more to keep an oven running longer but meat is expensive, so you may as well cook something well so that it's edible and enjoyable.