Cut steak into serving size peices. Pound steak with a meat mallet until tenderized. Dredge each peice in flour, salt and pepper. In a large skillet, heat vegetable oil. Add peices of steak and brown on both sides. Place browned steak in a large shallow baking dish. In the skillet with drippings from meat add remaining flour from dredging. Stir until lightly brown. Add celery, onions and green pepper and stir until tender. Add beef broth and stir to thicken. Pour over steaks. Add can of tomato sauce and kitchen bouquet. Stir well. Cover with foil and bake in 325 degree oven for 1 1/2 to 2 hours.