Slice and cube pork butt removing gland. Rinse, flour and brown cubed meat with garlic. Drain chop suey vegetables. Add to browned meat, stirring in sliced onion. Add 1/2 cup water with brown gravy, stir through. Simmer, adding seasonings and celery and chestnuts 5 minutes before serving along with steak sauce.
Bring rice and water to boil, stirring. Reduce to simmer and cover, stirring occasionally. Serve when rice is tender and fluffy.