2 cups crushed ice, plus extra for chill­ing glass
2 ounces light rum
1-ounce freshly squeezed lime juice, strained of pulp
1/2-ounce Sim­ple Syrup, recipe follows

If your glass is not chilled, do so by plac­ing some crushed ice in it and set it aside while you pre­pare the cocktail.

Place the 2 cups of crushed ice into a cock­tail shaker. Pour the rum, lime juice, and sim­ple syrup over the ice, cover, and shake well. Remove the ice from your serv­ing glass and strain the drink into it. Serve immediately.

Recipe cour­tesy Alton Brown, 2005
Show: Good Eats
Episode: Rais­ing the Bar