Dark and Stormy

Directions

1. 1
   Take 2 cups of the ginger beer and fill an ice cube tray with it.
2. 2
   Place in the freezer until firm.
3. 3
   Combine the remaining 6 cups ginger beer, the rum, lime juice, simple syrup and sliced limes in a pitcher; cover and refrigerate until cold.
4. 4
   Add the ice cubes just before serving in tall glasses.