Chill martini glasses in freezer for at least 10 minutes prior to serving.
Place Vodka, Triple Sec, lemon juice and sugar into a cocktail shaker with 4-5 ice cubes and shake vigorously for 30 seconds.
Run the lemon twist around the edge of the chilled martini glass and dunk in a small amount of sugar for a coated rim.
Pour the strained martini into the chilled glasses and serve.
