01 - Add the pitted cherries, lime juice, orange juice, pineapple juice, and sugar or agave syrup to a blender.
02 - Add the ice cubes and blend on high until the mixture is completely smooth and reaches a slushy consistency.
03 - Taste the slush and add more sugar or agave syrup as needed, depending on the natural sweetness of the fruit.
04 - Pour into chilled glasses, garnish with lime slices and fresh cherries if desired, and serve immediately.