First of all, Hornitos/Repasado Tequila is awesome. For a great variant use Mescal. Make sure that there is an Agave worm in the bottom of the bottle for authentic Mescal. If you can find Matilda Orange Liquer this is great. Finally, Lasco brand Margarita Mix is the best sweet and sour mix you can use.

Place the Tequila/Mescal, Cointreau/Matilda, Sweet and Sour/Lasco mix in a ice filled shaker. Shake well and strain into an ice filled Kosher salt rimmed glass with a lime slice for a gar