4 ounces vodka
1.5 ounces fresh-squeezed lime juice (about 1 lime)
4 fluid ounces unsweetened cranberry juice (see note)
6 ounces ginger beer
4 to 6 cranberries, for garnish
rosemary sprig, for garnish
In a cocktail shaker filled with ice, shake together the vodka, lime juice and cranberry juice.
Fill two copper mule mugs or old-fashioned glasses with ice. Strain half of the cocktail into each glass.
Top each glass with ginger beer. Garnish with cranberries and a sprig of rosemary. Serve immediately.
I prefer to use cranberry juice that has no added sugars. You may use cranberry juice cocktail if you wish, but I find it to be too sweet for most drinks. Cranberries are naturally sweet and tart, and there is sugar in the ginger beer to make this drink sweet on its own.