1 ounce brandy
1 ounce Cointreau (or Triple Sec)
¾ ounce fresh lime juice
6 ice cubes
1 tbsp chopped orange zest and 1 tbsp granulated sugar (for rimming glass)
Combine the orange zest and granulated sugar on a small plate. Moisten the rim of a martini glass with an orange segment or water. Dip in the orange zest/sugar mixture and set aside.
Pour brandy, Cointreau and lemon juice into a cocktail shaker. Add ice and shake vigorously. Pour into prepared glass.