Travel back in time to the fabulous era of the 1940s with a delicious cocktail served in one of these remarkable Moscow Mule mugs. The Moscow Mule cocktail was created in the 1940s at a Hollywood bar called the Cock n Bull. This tasty drink and its accompanying copper mug are now experiencing a revival. These copper mugs are gaining popularity on the bar scene and so is the retro drink. Take your Moscow Mule a step further with this special double-walled mug and enjoy a nice, cold cocktail in a mug that won't sweat or leave rings on your table.