For the spicy rim: Tajín Clásico Seasoning
1 ½ ounces mild mezcal (e.g. Del Maguey Vida)
2 ounces fresh orange juice
1 ounce fresh lime juice
Optional: 3 dashes of orange bitters (for extra orange flavor)
Optional: 1 to 3 teaspoons orange liqueur, simple syrup or agave nectar