OVEN METHOD: Dip chicken pieces in the vinegar sauce and place skin-side up in a greased metal 9x13" pan or 2 pans if necessary. Bake in a 400° oven, spooning a little of the vinegar mixture over the chicken pieces every 15 minutes or so, for 1 hour, or until chicken is well done. Switch to broiler for 5-10 minutes to crisp and brown the skin on the chicken pieces. Place chicken pieces on serving platter, and combine pan drippings with remaining vinegar sauce on the stove and bring to a boil. Serve with the chicken and Texas toast.