
In a medium saucepan, combine the sugar and water. Bring it to a boil over medium heat, stirring constantly.
Reduce heat to low and simmer for 5-7 minutes or until the sugar completely dissolves.
Remove the saucepan from the heat and stir in the chopped mint if desired.
Let the simple syrup cool completely before using.
Puree the pineapple in a blender until smooth. Then, pour the pureed pineapple into a large pitcher.
Add the passion fruit puree, lemon juice, and simple syrup to taste. Stir well to combine.
Add sweet sparkling wine if desired.
Adjust the strength of the lemonade with cold water as needed.
Chill the lemonade for at least 1 hour before serving, or pour over ice cubes.