Loin of Pork with Sweet Potatoes and Onions

Description
This recipe came from an estate sale. I obtained it when I purchased the family collection from the Wadley Estate in Allen, Texas in 1990.
 * Contributed by Catsrecipes Y-Group

Ingredients

 * 6 pounds pork loin with bones
 * 2 garlic cloves peeled
 * 2 teaspoons coarse salt
 * ½ teaspoon ground cinnamon
 * ¼ teaspoon ground cloves
 * ⅛ teaspoon cayenne
 * 3 tablespoons brown sugar
 * 1 tablespoon red wine vinegar
 * 1 teaspoon dried sage, ground
 * 3 tablespoons olive oil
 * 8 medium sweet potatoes
 * 8 medium Bermuda onions
 * 1 teaspoon freshly ground black pepper

Directions

 * 1) Wipe loin with a damp cloth then split the back and scrape or feather bones for easy carving and set aside.
 * 2) In a mortar with a pestle pound the garlic, salt, cinnamon, cloves and cayenne to a smooth paste.
 * 3) Blend in the sugar, vinegar and sage and mix well.
 * 4) Rub this mixture over the entire surface of the pork loin.
 * 5) Place the loin on a rack in a roasting pan large enough to hold the meat, sweet potatoes and onions then let sit at room temperature for 2 hours.
 * 6) Preheat oven to 400.
 * 7) Rub meat with 1 tablespoon of the oil.
 * 8) Rub sweet potatoes with another tablespoon of the oil and arrange them around the loin.
 * 9) Cut a cross on top of each onion going halfway through.
 * 10) Rub onions with the remaining oil and arrange them on the roasting rack around the loin and the sweet potatoes.
 * 11) Roast in the middle level of the oven for 1 hour 20 minutes.
 * 12) Remove from oven and let sit in a warm spot for about 10 minutes.
 * 13) Transfer loin to a serving platter then sprinkle salt and freshly ground pepper in the middle of the opened onions then arrange them and the sweet potatoes around the roast and serve.