Natalie Wood'S Beef Stroganoff - cooking recipe

Ingredients

2 lb. boneless sirloin, cut in strips 2 inch long by 1/2 inch wide
2 tsp. salt
1/2 tsp. freshly ground pepper
7 Tbsp. butter
1 Tbsp. flour
2 c. beef stock or canned diluted bouillon
1 1/2 Tbsp. tomato paste
4 Tbsp. sour cream
1 c. thinly sliced white onion
3 c. thinly sliced fresh mushrooms
1/2 c. dry white wine (optional)

Preparation

Season meat; let stand 2 hours in refrigerator.