Combine all ingredients in a mixing beaker. Add regular ice and stir for 30 seconds. Strain into a double old fashioned glass over large hand cut ice block. Using a vegetable peeler, remove long orange and lemon peels. Express each over the top of the cocktail and rub them together around the rim of the glass. Roll peels together into a rosette and place atop the cocktail. 

Recipe and photography courtesy of William Grant & Sons. 

Learn more here about the spirits: Ancho Reyes and Milagro Tequila.