Why are Moscow Mule and other cocktails best served in copper mugs? Well, copper can heighten the fizziness of ginger beer, vodka, and lime. Not to mention, it is a versatile and conductive material for retaining cold temperatures. Apart from its practical benefits, a good copper mug is also a stylish component of any drinking experience. Get yourself this charming drinking accessory and check out our list of the best copper mugs.