If you like a salted rim, rub a lime wedge around the rim of each margarita glass. Dip the rim into a plate of salt, ensuring it's evenly coated.

Using a jigger, measure out the fresh lime juice, Cointreau, and tequila.

Fill a cocktail shaker with ice to chill the ingredients as you shake.

Add the measured lime juice, Cointreau, and tequila into the shaker.

Secure the shaker and shake vigorously for about 15 seconds.

Using a strainer, pour the margarita mixture into the prepared glasses.

Garnish with a lime wheel or wedge.