Surprise Supper
["4 pork chops", "4 medium sweet potatoes, peeled", "1 lemon, thinly sliced", "8 tsp. lemon juice", "8 Tbsp. brown sugar", "8 pats margarine", "salt and pepper to taste"]
["You will also need 4 (18 x 12-inch) pieces heavy aluminum foil."]
["pork chops", "sweet potatoes", "lemon", "lemon juice", "brown sugar", "margarine", "salt"]