Beef Stroganoff

Directions

1. 1
   In heavy skillet, saute mushrooms in oil.
2. 2
   Remove when tender. Saute onion in same oil until tender.
3. 3
   Remove from skillet. Brown meat quickly on all sides.
4. 4
   Remove; set aside.
5. 5
   Blend flour into oil in skillet.
6. 6
   Gradually add broth; stir constantly until smooth and thick.
7. 7
   Add tomato paste, mustard and sherry; blend well.
8. 8
   Combine sauce with meat, mushrooms and onion in a large saucepan.
9. 9
   Simmer very slowly for 20 to 30 minutes.
10. 10
    Beat yogurt, then blend in 5 minutes before serving.