Preheat the oven to 45o degrees F. Place the pork in a roasting pan on the center rack in the oven and roast for approximately 20-25 minutes. Reduce the oven temperature to 325 degrees F and roast for approximately 10-15 minutes until the internal temperature is somewhere between 140-145 degrees F.
Pull from the oven and let rest at room temperature for 10 minutes prior to slicing.
Meanwhile, bring the juice of an orange and scant 1/2 cup of honey to a boil, reduce by half or until the sauce coats the back of a spoon.
Pour over sliced pork loin and serve with fresh orange slices.
Buon Appetito!