The inspiration for this delicious roast comes from chef John Besh's father-in-law, Pat Berrigan, who serves it every Christmas with horseradish sauce on the side. Besh opts to smear the roast with a horseradish, garlic & herb butter, which bakes to form an irresistible crust. However, this meal need not be only for Christmas! Recipe by chef John Besh from The Big, Easy Christmas in F&W Magazine, December 2007 edition.