Chill your coupe or margarita glass by filling it with ice and water, then set aside while you build the cocktail.

Cut the lime in half and juice it, straining out any pulp directly into your jigger or a small bowl.

Pour salt onto a small plate and dampen the rim of your chilled glass with a lime wheel or water, then roll the rim in salt and discard the ice water.

Fill your cocktail shaker about three-quarters full with ice cubes.

Measure and add 1.5 ounces of tequila and 0.75 ounces of Aperol into the shaker.

Add 0.75 ounces of fresh lime juice and 0.5 ounces of agave nectar to the shaker.

Cap the shaker and shake vigorously for 10 to 12 seconds to chill and dilute properly.

Strain the mixture into your salt-rimmed glass over fresh ice using a strainer.

Garnish with a fresh lime wheel on the rim or floated on top, then serve immediately.