Find recipes for Holiday Pork Loin Roast and other Course recipes. Get all the best recipes at . Recipe directions: In a bowl, combine the soy sauce, sherry or broth, mustard, ginger, thyme and garlic; mix well. Pour 1 cup marinade into a large resealable plastic bag; add the roast. Seal bag and turn to coat. Refrigerate for 3 hours or overnight, turning occasionally. Cover and refrigerate the remaining marinade for basting.