2 lbs. lean beef
1 lg. onion
1 lb. white mushrooms
1 tbsp. tomato paste
8 oz. sour cream
1 tbsp. flour
Salt
Pepper
Sweet paprika
1/2 sour cucumber

In a large pot saute onion with 2 tbsp. butter. Cut beef into 2 inch long strips. Brown beef with onion.

In another pan saute mushrooms; add to beef. Add salt and pepper. Cook for 30 minutes. Add tomato paste and cut cucumber and paprika. cook for 15 minutes. Mix sour cream, flour and water in bowl and add to pot and boil.