In a pot, bring the water and sugar to a rolling boil. Keep it bubbling for a full three minutes, then turn off the heat and stir in the orange juice, lime juice, and wine.

Pour into a 9×13-inch dish or any container with a wide base and freeze for 12–24 hours.

Break into pieces and blend in a food processor fitted with the S blade on high speed until very slushy, three to five minutes.

Fill the molds and freeze for 24 hours before serving.