Step 1

If you would like salt-rimmed glasses, begin by running a lime slice (the juicy part) around the top rim of a glass.  Fill a shallow bowl with salt, and dip the rim in the salt until it is covered with your desired amount of salt.  Set aside.

Step 2

Add mezcal, lime juice and Cointreau to a cocktail shaker, and shake or stir until combined.  Taste, and if you would like it to be sweeter (most people do!), stir in a half teaspoon of agave or simple syrup until the mix reaches your desired level of sweetness.

Step 3

Fill glass with ice.  Pour in the margarita mixture over the rocks.  Serve immediately, garnished with an extra lime wedge if desired.