Brazilian Rum with Lemon Juice

Ingredients

 * 2 teaspoons egg whites
 * 2 tablespoons sugar, superfine
 * 2 ounces Brazilian rum
 * 1 ounce lemon juice
 * 4 ice cubes
 * 1 lemon slice

Directions

 * 1) Combine egg whites and sugar in a mixing glass.
 * 2) Stir with a bar spoon to dissolve sugar.
 * 3) Add Brazilian rum, lemon juice and ice cubes.
 * 4) Place a bar shaker on top of mixing glass and, grasping glass and shaker firmly together with both hands, shake vigorously 9 or 10 times.
 * 5) Remove shaker, place a strainer on top of glass and pour into a chilled old fashioned glass.
 * 6) With a sharp knife, slit lemon slice from peel just to center and use the slit to hold the slice on the rim of the glass.