3 oz silver Tequila
1/2 cup cubed watermelon
1/4 cup grapefruit juice
Juice of half a lime
2 tsp agave
Club soda (I used Waterloo watermelon!)
Place the watermelon in the bottom of a cocktail shaker. Add the Tequila, juices, and agave and muddle well. Add ice and shake vigorously. Strain over crushed ice into a salt-rimmed glass and finish with club soda. Garnish with watermelon and fresh mint.