I got some cheap ones recently that look like a golf ball almost with the pitting on the outside (the ones pictured above are a bit tame in appearance). I didn’t even realize there were smooth Moscow Mule copper mugs out there until I started browsing for pictures.
But it makes me wonder: is there a difference between the hammered versus the smooth Moscow mule mugs?
Apparently, a Moscow mule is vodka, lime, and ginger beer, and often served in copper cups. Why exactly? It keeps it cold longer and better than glassware, for one thing. For another… it was a marketing ploy as some sites describing copper cookware and drinkware like to admit.
The only thing I can really find is a safety concern regarding copper mugs. Today, most copper mugs that are sold and meant to be drunk from have nickel lining because copper is a heavy metal and can leach into your drink (which also means you’d better hand-wash these suckers rather than use the dishwasher).
I haven’t dug deep, but this website about copper mugs is pretty helpful for some questions.
Regarding the hammering technique to make the mugs (and leave those obvious indents) versus the smoother versions… I don’t know if there’s a difference as far as the drink that goes in them is concerned. Is it a throwback to some rustic styling, or does it have a purpose related to taste and aroma, like it traps some of the beer’s carbonation or something?
Anybody know? Just found these mugs a bit weird and keep wondering why.