
Mix the sugar and water in a medium saucepan and bring to a boil. Stir and simmer until the sugar dissolves (5-7 minutes). Throw in a little mint if desired. Then let it cool.
Puree the chopped pineapple in a blender.
Pour pureed pineapple into a large pitcher, followed by the lemon and lime juice. Then, add simple syrup to taste. Stir well.
Add the optional sweet sparkling wine, and adjust the strength with cold water if needed.
Chill or pour over ice cubes.