4 ounces (1/2 cup) blood orange simple syrup (reserve a small amount for rimming the glasses)
Kosher salt for rimming the glasses
Blood Orange slices or wedges of lime for garnish
For the blood orange simple syrup- combine the water, Blood Orange Marmalade and sugar in a small saucepan. Bring to a boil over medium heat, stirring until the sugar dissolves. Remove from heat and cool.
For the margaritas- combine the lime juice, orange juice, tequila, Triple Sec, and blood orange simple syrup in a pitcher. Refrigerate until ready to serve.
Moisten the rim of two glasses with remaining blood orange simple syrup. Pour salt onto a small plate. Dip the rim of the glasses into the salt. Place ice in each glass; fill with blood orange margarita and garnish with a slice of orange or wedge of lime.