Step 1

Run lime wedge around the outer rims of 2 rocks glasses and dip rims in salt. Set aside.

Step 2

In a cocktail shaker, combine tequila, Cointreau, and lime juice. Fill with ice and shake until thoroughly chilled, about 15 seconds (the bottom of a metal shaker should frost over).

Step 3

Fill glasses with fresh ice and strain margarita into both glasses. Garnish with lime wheels and serve.