This originated from an old McCalls magazine years ago. Some adaptations have been made over time by my mother, Val Simpson.
Portion size8 servings
Wash and peel potatoes. Cut into slices, 1/8 inch thick, down through the top of each potato (not through the bottom), leaving bottom intact. Place potatoes in ice water, to chill about 1 hour. Wipe pork with damp paper towels; trim off excess fat. Preheat oven to 350F. With a long, narrow sharp knife, starting at each end, pierce through to center of pork loin. Using fingers, push prunes into the holes to fill completely. Rub roast on all sides with half lemon. Sprinkle with sale, pepper and ginger. Insert the meat thermometer into center muscle of pork away from bone. Place, with fat side up, in shallow roasting pan without rack; pork will rest on bones. Pour beef broth around pork. Cover pan with foil, or use a tight-fitting lid. Roast, covered, for 30 minutes. Remove roast from oven. Drain potatoes; dry on paper towels. Roll potatoes twice in melted butter and paprika mixture. Place around roast, pour paprika-butter over potatoes. Roast pork, uncovered, basting every 1/2 hour with pan drippings; add water, if necessary. Roast for 1 hour and 20 minutes or until the thermometer registers 175F. Remove roast and potatoes to heated platter; keep warm in low oven. Make gravy: Pour pan drippings into 2 cup measure. Skim off fat; reserve 2 tbsp fat; return to roast pan. Stir in flour and ginger until smooth. Cook, stirring over low heat, to brown flour slightly. Add water to pan drippings to make 1 1/4 cups. Gradually stir into flour mixture, along with the milk; bring to boiling. Stir until thickened. Serve hot with pork. Serves 8.