Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  1 1/2         pounds  lean beef
  3        tablespoons  butter
  1                cup  sliced fresh mushrooms
  1              large  onion -- sliced
  2        tablespoons  flour
  2               cups  beef bouillon or consomme
  2        tablespoons  tomato paste
  1           teaspoon  dry mustard
  3        tablespoons  dry sherry
     2/3           cup  sour cream

Preparation:

Cut beef into narrow strips about 2 1/2" long. Dust the strips with salt and pepper. Melt 2 T. of the butter and saute the mushrooms. Set aside. In same butter saute the peeled and sliced onion until brown and set aside. Add rest of the butter to pan and saute the beef. Add the flour, browning well. Slowly add the broth, sherry, tomato paste and the mustard. Blend well. Let simmer for about 20 minutes. About 5 minutes before serving, add the sour cream and blend thoroughly.

Nutritional Information:

381 Calories (kcal); 28g Total Fat; (66% calories from fat); 24g Protein; 6g Carbohydrate; 96mg Cholesterol; 173mg Sodium