Antilles Old Fashioned

Directions

1. 1
   In the bottom of a double old fashioned glass douse the sugar cube with Curacao. Give it a good whack to break it apart.
2. 2
   Muddle the grapefruit peel-peel side down-into the sugar. Do this for a minute or two to release the oils. The sugar should be syrupy by the time you're finished.
3. 3
   Add the whiskey and a large ice cube and stir using a cocktail stirrer: 30 spins in one direction then 30 spins in the opposite direction.
4. 4
   Serve in glass.