Gather all ingredients and tools: shaker, jigger, and glass.
Rim the glass with lime juice and dip it into salt to coat the rim.
In a shaker, combine tequila, lime juice, and triple sec.
Add ice to the shaker until full.
Shake vigorously for about 15 seconds to chill the mixture.
Strain the mixture into the prepared glass over fresh ice.
Garnish with a lime wedge on the rim of the glass.
Optionally, add a splash of simple syrup for extra sweetness.
Serve immediately and enjoy responsibly!