No roast beef is complete without a tangy, spicy horseradish sauce to cut through its deep flavor. Serve this with our Standing Rib Roast with Roasted Potatoes.This recipe was also featured on "Mad Hungry for the Holidays."
Whisk all the ingredients together in a medium bowl. Cover, and refrigerate for up to 1 day. Stir before serving.
If you prefer, you can substitute 1/3 cup prepared horseradish for the fresh, leaving out the vinegar.