For the Cranberry Simple Syrup: Combine the cranberries, sugar, orange zest, orange juice, and the water in medium saucepan. Cook on medium-low heat, stirring frequently, for 10 to 12 minutes, or until the cranberries start to burst and the sugar is dissolved. Pour the cranberry mixture through a fine-mesh strainer into a glass container, gently pushing the cranberry mixture against the mesh of the strainer with the back of a wooden spoon. Add the ice cubes and stir. Chill in the refrigerator for at least three hours.
For the Cocktail: Combine the lime juice, orange juice, tequila, and 1 cup of the cranberry simple syrup in a large pitcher, stirring to mix. Chill the cocktail mixture for at least 2 hours. Serve aside the remaining simple syrup, so guests can sweeten to taste.
This recipe is from Martina McBride's cookbook Around The Table: Recipes and Inspiration for Gatherings Throughout the Year.