Glazed Pork Roast

3 – 5 lbs. bone-in pork loin roast. Serves 4-6. For the glaze: In a medium saucepan, brown 1/2 onion chopped in a little olive oil. Add 1 cup balsamic vinegar, 2 tsp. thyme. Boil to reduce by half and put in a pyrex cup. In the saucepan, boil 2 cups chicken stock, boil to…