The past and present of the copper mug

Before the copper mug became a legendary cocktail glass, it was merely a possession of a Russian immigrant named Sophie Berezinski. In collaboration with bar owner Jack Morgan and businessman John Martin, the Moscow mule was created in 1941 to introduce American bars to Russian vodka. What began with just a few copper mugs evolved into a fundamental element for crafting Moscow mules and their variations.
The copper mug became indispensable due to its ability to maintain the temperature of drinks. Pure copper mugs excel at keeping Moscow mules colder for extended periods. While unlined copper mugs are still available today, there are some concerns regarding their safety compared to lined versions.
Nonetheless, many restaurants and bars continue to serve Moscow mules in copper mugs, regardless of whether they are lined. Some establishments have chosen to serve Moscow mules in regular glasses instead, a practice that some devoted Moscow mule fans disapprove of. However, Julep cups or other metal containers are often accepted since they provide a similar cooling effect as copper mugs.
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