Apparently first served to actor Broderick Crawford back in 1941, the history of the Moscow Mule is one of oversupply. When you need to get rid of Copper Mugs, Ginger Beer and promote a new Russian Vodka in the US, you end up with this refreshingly spicy Cocktail.
Squeeze lime juice into a Collins glass (or Moscow Mule mug) and drop in the spent shell. Add 2 or 3 ice cubes, then pour in the vodka and fill with cold ginger beer
Lime wheel & Mint