From Ronaldo Colli, Americano Restaurant in San Francisco. If you can't find agave nectar, you can substitute with simple syrup. If you cannot find the GranGala, use Grand Marnier in its place.
- Pour the tequila, orange liqueur, juices, and nectar into an ice-filled shaker.
- Add the orange peel, shake vigorously, and strain into chilled margarita glass.
- Garnish with a lime wheel and the orange peel.