Instructions: To make the blue syrup, combine 1 cup sugar, 1/2 cup water and 1 teaspoon Koolaid in a pan. Stir over medium heat until the sugar has completely dissolved. In a medium size glass with ice, add 1.5 ounces vodka, 1.5 ounces syrup (or to taste), 4-6 ounces club soda. Then, stir it up and squeeze the juice of one lime. Add a rock candy stick for garnish.