Rub a lime wedge around the entire rim of your glass.
Dip the rim of the glass into a shallow bowl or plate of salt. Turn the glass until salt has adhered to the rim. Fill glass ¾ of the way full with ice. Set aside.
Fill a cocktail shaker with ice. Add the gin, lime juice and agave to the shaker. Shake well for 30 seconds.
Pour the cocktail into the salt-rimmed glass. Garnish with a lime wheel and enjoy!
Notes
Always use fresh-squeezed lime juice. I find that 1 ½ to 2 limes is about 1 ounce of juice.
If you don't have agave you can use simple syrup, maple syrup or honey.
You may use a jar with a lid instead of a cocktail shaker, just strain when you pour the drink into a glass.