* NOTE: If desired, sauté ... combine beets and horseradish to make spread; blend well. ... of bread. Arrange beef, onion, mushrooms and lettuce ... Daily Value / Mealtime.org
In a small bowl, whisk together the vinegar, mustard, horseradish, salt and pepper. Whisk ... mayonnaise. Arrange the beef on a platter and serve it with mustard sauce.