Begin by rimming the margarita glass with salt. Moisten the rim with a lime wedge and dip it into a plate of salt to coat evenly.
Fill the shaker with ice cubes.
Pour in the tequila, triple sec, lime juice, and simple syrup.
Fasten the lid tightly on the shaker and shake energetically for approximately 15-20 seconds.
Strain the mixture into the prepared margarita glass.
Garnish the drink with a lime wedge.