The Grilled Watermelon Margarita

To make grilled watermelon syrup:Cut watermelon into slices and grill until both sides of the watermelon have grill marks.

After letting cool, blend with simple syrup (1:1) and then fine strain.

Add all ingredients to shaker with ice.

Shake and fine strain over ice into Tajin-salted rocks glass. (3:1 Tajin to kosher salt)

Garnish with lime wheel.