Alchemade Pure Copper Barrel Mugs, now available with your own custom message, graphic or logo! Product Features • Food-safe lacquer resists tarnishing • Not microwave or dishwasher safe • Seamless hygienic interior Unlike many other copper mugs on Amazon, our Moscow Mule Mugs are constructed of 100% Pure Copper. There is NO stainless steel or nickel lining. The mug of choice when serving the infamous Moscow Mule, a cocktail made from a blend of vodka, ginger beer, and lime juice. The copper mug enhances the flavor and keeps the drink colder, longer. Great for other drinks too! Although there is debate about the beginnings of the Moscow Mule, there is no debate about its lasting legacy. Some say the inventors had a stroke of genius, while others claim it was simply created in an effort to go through a plentiful stash of both vodka and ginger beer. Whether it was a marketing effort or a stroke of luck, we're convinced it was the mug that made the mule. Support Your questions will be answered within 24 Hrs Guaranteed Quality We guarantee our quality and if the mug comes with any damage, we will replace it Care Instructions for a Long Lasting Moscow Mule Mug After each use, clean with warm water and soft soap. No hard chemicals or detergents. Dry the copper mug with soft cloth. Do not leave your drink in mug overnight to avoid stains Not dishwasher safe Do not use in microwave Do not use with hot beverages Moscow Mule Recipe Fill your copper mug with ice Pour in 1.5 - 2 oz of vodka Fill with 4 - 6 oz of cold ginger beer Squeeze lime juice into Moscow Mule Mug Garnish with a wedge of lime