Coat a large ovenproof Dutch oven with vegetable oil and place over medium-high heat. When very hot, add the pork roast.
In a medium bowl, combine the honey, orange juice, apple juice concentrate, pepper, and brown sugar. Spoon over the pork roast. Place the sweet potatoes around the pork.
Let the pork stand for 10 minutes before slicing.
I usually just serve this with some rolls. Nothing else is really needed.