Ingredients

1 cup mayonnaise2 teaspoons finely chopped onion2 teaspoons lemon juice2 tablespoons horseradish mustard or spicy brown mustard1-1/2 pounds beef tenderloin, cut into 3/4-inch cubesOil for deep-fat frying

Preparation

In a small bowl, combine the mayonnaise, onion, lemon juice and mustard; cover and refrigerate for 30 minutes.

Pat meat dry with paper towels. Heat oil in a fondue pot to 375°. Use fondue forks to cook meat in oil until it reaches desired doneness. Serve with sauce.