Beef Stroganoff - cooking recipe

Ingredients

2 lb. top sirloin steak, cut thick
2 Tbsp. butter
2 Tbsp. onion, chopped
2 Tbsp. flour
1/2 c. dry sherry wine
1/4 tsp. each: salt and pepper
2 lb. mushrooms, sliced
1 pt. sour cream
2 Tbsp. tomato paste
1 tsp. paprika
1 clove garlic, minced

Preparation

Pre-fry mushrooms until half done, then add sour cream, tomato paste, paprika and the garlic.
Cut meat across the grain in squares (approximately 1-inch).
Heat meat with butter and onion in skillet until meat is slightly brown.
Stir in flour; add sherry.
Cook, stirring constantly, until sauce boils and thickens.
Season with salt and pepper.