Heat bacon drippings in large saucepan. Add 1/2 cup flour, or enough to blend with drippings. Add salt. Stir until as brown as possible without burning. Add onion, celery and pepper and stir until wilted. Add tomatoes and cook for minute or two, stirring constantly. Add sausage, cut into circles, and the water. Cool all together until well done; then add shrimp. Cook shrimp only a short time (about 7 minutes), or it will break into pieces. Serve over hot rice.