1 tablespoon chile powder (I used Ancho Chile Powder.)
1 tablespoon kosher salt
1 lime wedge
1 small mango, peeled, pitted, and coarsely chopped
3 ounces grapefruit soda (Fresca worked for me.)
1 1/2 ounces fresh lime juice
2 ounces orange liqueur
1 1/2 ounces agave nectar
3 ounces tequila
1 cup ice
Combine the chile powder and kosher salt in a shallow saucer.
Moisten the rim of a glass with the lime wedge.
Dip the rim into the chile powder mixture to coat.
In a blender, puree the mango.
Add the remaining ingredients and blend until smooth.
Pour into the glass and serve.