2 oz. blanco tequila (or reposado)
3/4 oz. fresh lime juice
3/4 oz. agave syrup
Garnish: Lime wedge
Combine all of the ingredients in a shaker and fill with ice. Shake to chill, strain into an ice-filled rocks glass, then garnish.
Optional: Before preparing the drink, moisten the rim of the glass with a lime wedge and dip in kosher salt.