In a saucepan, combine the water and sugar. Heat over medium until the sugar dissolves completely, creating a simple syrup.

In a large mixing bowl, combine the lemonade and orange juice.

Add the cooled sugar syrup to the juice mixture. Stir well to ensure everything is mixed thoroughly.

Pour in the brandy and mix until fully integrated.

If using, add the frozen strawberries to the mixture.

Transfer the mixture to a freezer-safe container. Freeze for at least 6 hours or until solid.

Once frozen, take the container out and let it sit for a few minutes. Then, use a blender to blend the frozen mixture until it reaches a slushy consistency.

Pour the slush into serving glasses. Garnish with a slice of orange or a strawberry.