One classic glass that should make its way into every home barware stash is a copper mug (or four, since your friends will want a cocktail in one, too). Copper has been prized for centuries for its heat and cold conducting ability. The best cookware in the world has some copper in it.
What this means for your Moscow Mule is: your copper mug gets frosty cold when it holds this ice-cold cocktail. Most copper mugs aren't 100% copper, but are lined with copper on the outside. High quality cookware is partially copper for the same reason- copper is reactive to acidity in cocktails and in food, and can leach copper into your food or drink. In small quantities copper is fine, even important for human health, but think before drinking every cocktail out of a copper mug and sending your system out of whack.
Nevertheless, copper mugs are an essential member of the cocktail glass family. Just remember when buying to look for one with a handle- no handle means the glass could get uncomfortably cold with your favorite beverage in it.
Our favorite sources for copper mugs:
The Hour Shop in Alexandria, Virginia. The copper mug in the photograph above is sold by this shop. Look here for contemporary copper mugs and also some amazing vintage barware. If you don't see something on their website, give them a call- they're very helpful.
These stainless steel-lined copper mugs from Amazon.com won't leach copper into your cocktail, but will still stay frosty cold.
Monogram these copper mugs and ensure that none of your friends can steal them after a night of overindulging in Moscow Mules.
Once you've got your copper mug, don't forget to pick up some True Ginger Syrup to make yourself the most authentic Moscow Mule!