PART 3: Are you excited for the #DowntonAbbey movie? We hosted the Countess of Carnarvon of Highclere Castle (the real-life @downtonabbey_official!) for some cocktails from our new cookbook, How to Cocktail. Watch @dzuccarello (Executive Food Editor) make a refreshing muddled celery gimlet, featured in #HowtoCocktail. @highclerecastlegin