Beef Stroganoff - cooking recipe

Ingredients

1 1/2 lb. sirloin tip roast, cut in finger-size strips or cubed
flour
salt
oil
1 c. sour cream
1/2 lb. mushrooms
2 Tbsp. ketchup
2 Tbsp. butter
1 Tbsp. Worcestershire sauce
1 tsp. dry mustard
1 can beef bouillon

Preparation

Season meat strips with salt; flour and brown in oil.
Add mushrooms, ketchup, butter, Worcestershire sauce and mustard. Cook slowly until meat is tender (1 1/2 hours).
Just before serving, add sour cream and stir well.
Serve with rice or noodles.