Boil chicken pieces in water, onion, celery, salt and pepper, until done. Remove chicken and cool so that chicken may be removed from the bone. Cut chicken into small 1/2" chunks and put aside. Remove onion pieces and skim fat from broth. Mix flour and water in shaker and thicken broth to a gravy consistancy and add chicken peices. Ladle over waffles and pepper liberally. May be used with leftovers also, especially Turkey.