This is an easy way to make your st. Patrick's day corned-beef dinner, and it makes a fabulous sunday dinner as well. Make the horseradish sauce and chill it for least an hour or two for best flavor. If you don't care for horseradish, feel free to omit it. Add boiled cabbage wedges (see the tips and variations, below) or a cabbage gratin to the meal and serve it with crusty bread or a rustic irish soda bread.