How to Make It
In a large pitcher, mix the blood orange juice with the lime juice, Cointreau and silver tequila. Refrigerate until chilled, at least 30 minutes.
Spread a small mound of salt on a small plate. Moisten the outer rim of 12 martini glasses with the orange wedge, then dip the rims into the salt to lightly coat.
Add ice to the pitcher and stir well, then strain into the prepared glasses. Garnish each margarita with a blood orange slice and a sage sprig and serve.