Why A Copper Mug Is Used To Serve Moscow Mules

Made with refreshing lime juice, ginger beer, and a touch of mint, Moscow mules are said to be served in copper mugs to keep the drink's temperature down.

The drinking vessel is also thought to give the vodka more depth in flavor and a richer aroma while making the lime juice and ginger beer more intense.

Today, the copper mug no longer contributes to taste, as most mugs are lined. However, it still helps regulate temperature, which is why the drink is still served in copper mugs.