Using a combination of roasting and baking, the roast is moist and totally delicious.
Start by rubbing all sides of the roast with the salt, pepper, garlic and sage. Place it on a rack and roast at 450°, uncovered for about 35 to 40 minutes, or until the outside is beginning to form a crust.
Turn the heat down to 325° and continue cooking for about 2 to 3 hours or until the internal temperature reaches 150° to 160°.
Remove from the oven and allow to rest for 3 to 5 minutes before slicing.