Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      pound         pork tenderloin
     1/2  pound         ripe tomatoes
   3                    scallions
   1      tablespoon    tarragon vinegar
   2      tablespoons   horseradish
                        salt & pepper
   3      tablespoons   butter
   2      tablespoons   vegetable oil

Preparation:

Place tomatoes and scallions in food processor. Pulse until smooth. Add vinegar and horseradish, salt and pepper to taste. Process to blend. Melt half the butter and oil in a wok over medium-high heat. Pour sauce into wok and cook 2 minutes. Stir. Pour out into a bowl. Cover to keep warm. Add remaining butter and oil to wok and stir-fry pork until well browned. Lower heat and pour sauce back into wok. Simmer 2 minutes. Adjust seasoning if needed. Serve hot. Approximately 6-8 minutes.