How to Make It
In a small saucepan, combine the sugar, water, cinnamon stick, cloves and nutmeg. Bring to a simmer, stirring until the sugar is dissolved. Let cool, then strain.
Fill a cocktail shaker with ice. Add the lime juice, grapefruit juice, tequila and 2 tablespoons of the spiced simple syrup. Shake well and strain into an ice-filled collins glass. Garnish with a cherry, if desired.