Easy Any-Juice Ice Pops

In a small saucepan, bring sugar and 1/3 cup water to a boil over high, stirring until sugar dissolves. Transfer to a 4-cup liquid measuring cup or medium bowl and refrigerate until cool, 30 minutes. Stir in juice. Pour mixture into eight 3-ounce ice-pop molds. Insert ice-pop sticks and freeze until solid, 6 hours (or up to 2 weeks).