This perky pink traditional Mexican gluten-free cocktail by our Bay Area bartender friend Jeff Burkhart features tequila, grapefruit juice, bubbly water, and a hint of sweetness — perfect for brunch or a sunny happy hour. Bonus: provided you use good-quality tequila with no additives, it's naturally gluten-free.
Salt the rim of a tall Collins glass by slitting a lime wedge in the middle and running the slit around the rim of the glass.
Dip the moistened rim in a small plate of kosher salt and shake off the excess.
Combine the tequila, grapefruit juice, and agave syrup in a shaker with ice. Shake to combine and pour into the Collins glass. Top with the sparkling water and garnish with the grapefruit wheel.