The classic traditional recipe for this mug is vodka, ginger beer and ice, then add a slice of lime and if you have some, finish with some mint. This copper mug works with any cocktail and even works well with hot toddies. . First used in the 1950's as a way to keep your drinks cool for longer. Copper is used as it has very high thermal conductivity which` helps to make your Moscow Mule and other beverage feel nice and cold. It holds a surprising 550ml and only measures 8cm x 10cm (H).