1/2 c  Chopped celery
1    Onion, chopped fine
1/4 lb Mushrooms, sliced
1/4 c  Butter
1/2 c  Flour
1 ts Soy sauce
1 1/2 c  Beef bouillon
1 c  Sour cream
2 c  Thinly sliced roast beef,
Cooked

Cook celery, onion and mushrooms in butter until tender. Stir in flour and
soy sauce. Add bouillon; cook, stirring until thickened. Stir in sour
cream. Add beef and heat through. Serve with hot cooked rice or noodles.