A brewery in Windsor, the British town where Prince Harry will marry American Meghan Markle in May, believes it has concocted its own perfect pairing with a "royal beer" celebrating the occasion. The regal-themed brew, a pale ale named "Harry & Meghan's Windsor Knot", appropriately combines British and American hops, barley grown on the Royal Farms adjoining Windsor Castle -- and a finishing touch of champagne yeast.