In a medium saucepan, combine sugar and water.
Cook, stirring, over medium heat until sugar is dissolved.
Pour into a large pitcher. Add brandy and red wine. Stir
Add rhubarb and lemon. Refrigerate 2-4 hours.
Just before serving, add sparkling wine (or soda) and fill pitcher with ice. Pour into tall, well-chilled glasses. Makes 4-6 servings.