1. Toss beef in flour.
2. Brown with butter and oil in skillet.
3. Add beef broth and bring to a boil.
4. Combine sour cream, tomato paste, paprika, and salt.
5. Reduce heat and slowly add to beef mixture, do not boil.
6. Cook uncovered over low heat for 15-20 minutes stirring frequently.
7. Serve over noodles.