Ingredients

2 ounces vodka, chilled 

1 ounce fresh lime juice, plus 3 thinly sliced lime rounds, for garnish 

4 ounces ginger beer (1/2 cup), chilled 

Preparation

Fill a 12-ounce glass, preferably a copper mug, with crushed ice. Stir in vodka, lime juice, and ginger beer. Garnish with lime rounds.