Moscow Mule

 

I know this from Better Call Saul. 2 oz. vodka. 1/2 oz. lime juice. 3 oz. ginger beer. Lime wheel garnish. Fill copper mug with ice and then add vodka and lime juice and top with ginger beer. 

https://en.wikipedia.org/wiki/Moscow_mule 

https://www.liquor.com/recipes/moscow-mule-cocktail-recipe/