Instructions
- Rub the rim of a margarita glass with lime juice and dip it into salt.
- In a shaker, combine the tequila, grapefruit juice, lime juice, and agave syrup.
- Fill the shaker with ice and shake vigorously for about 15 seconds.
- Strain the mixture into the prepared margarita glass filled with ice.
- Garnish with a slice of grapefruit and serve.