1. Cut the fillet of beef into thin strips

2. Sprinkle the beef strips with salt and pepper

3. Place the beef in the refrigerator or in a cool place for 2hours

4. Make a sauce by blending 1 tablespoon of flour with 2 tablespoons of butter over
gentle heat until the mixture bubbles and is smooth

5. Gradually stir in the cups of beef stock and cook for 2minutes until the mixture begins to thicken

6. Strain the sauce through a fine sieve into a saucepan.

7. Add the sour cream alternately with the tomato juice and stir constantly

8. Let the mixture simmer gently without boiling

9. In a separate pan, fry the strips of beef and the grated onion in the remaining 3 tablespoons of butter

10. When the meat is brown, pour it into the sauce and let it simmer gently for 20minutes

11. Serve immediately

List of ingredients required:

2lb fillet of beef
Salt and pepper
1 tablespoon flour
5 tablespoons butter
2 cups beef stock
3 tablespoons heavy sour cream
2 tablespoons tomato juice
3 tablespoons grated onion

1. Cut 2 pounds tender beef into narrow strips 1/2 inch thick and 2 inches long.
2. Season generously with salt and pepper.
3. Let the meat stand for 2 hours in a cool place or in the refrigerator.
4. Make a roux by blending 2 tablespoons butter with 1 tablespoon flour over a gentle heat until the mixture bubble and is smooth.Gradually stir in 2 cups beef stock.
5. Cook until the mixture begins to thicken.
6. Boil for 2 minutes.
7. Stir in 2 teaspoons prepared mustard.
8. Stir in 4 tablespoons thick sour cream.. stirring constantly.
9. Simmer gently without boiling.
10. Brown the pieces of meat in 3 tablespoons butter.
11. Sauté 3 cups mushrooms and 1 onion (both firmly sliced), lightly in butter.
12. Cover the saucepan.
13. Put it over hot water for 20 minute.
14. Serve hot.

List of ingredient required:

• 2 pounds tender beef.
• Salt.
• Pepper.
• Butter.
• 1 tablespoon flour.
• 2 cups beef stock.
• 2 teaspoons prepared mustard.
• 4 tablespoons thick sour cream.
• 3 cup[s mushrooms, firmly sliced.
• 1 onion, firmly sliced.