Marinated Peppercorn and Mustard Beef with Horseradish Mayonnaise Recipe

RECIPE INGREDIENTS
For Beef:
2 filets of beef tenderloin
2 cups dry red wine
1/2 cup vegetable oil
2 garlic cloves, crushed
2 bay leaves
1 onion, chopped


Cracked black peppercorns
For Mayonnaise:

1/4 cup butter, melted
3/4 cup mayonnaise
2 tablespoons sour cream
2 tablespoons prepared horseradish
1 tablespoon Dijon mustard
2 tablespoons white wine vinegar
1/4 cup chopped chives

RECIPE METHOD
FOR BEEF: Preheat oven to 350 degrees F. Tie the beef with string and place in a shallow dish. Add red wine, oil, garlic, bay leaves, and onion; leave to marinate for several hours. Pour off 2 cups of the marinade and discard. Place beef in the oven with remaining marinade and bake for about 1-1/4 hours or until cooked as desired. Allow to cool to room temperature, remove string and roll meat in cracked peppercorns.
FOR MAYONNAISE: Combine all mayonnaise ingredients and mix well.
TO SERVE: At serving time, slice beef and serve with mayonnaise.