Salt the rim (optional). Run a lime wedge (the juicy part) around the top rim of your serving glass. Fill a shallow bowl or plate with coarse salt, then dip the rim until it is covered with your desired amount of salt. Set aside.

Make the margarita mix. Add bourbon, Cointreau, lime juice and a few ice cubes to a cocktail shaker. Shake or stir vigorously for about 10 seconds to chill. Give the mix a quick taste and stir in your desired amount of sweetener if desired.

Serve. Fill the prepared serving glass with ice. Strain in the margarita mix, garnish as desired, serve and enjoy. Cheers!