White Wine Sangria

This recipe requires advance preparation. Pour the wine and sugar into a large pitcher. Add the lemons, limes and oranges one slice at a time, muddling with a wooden spoon to release the juices. Stir in the grapes and refrigerate several hours or overnight. Add the lemon-lime soda just before serving. Serve over ice, adding fruit to each glass. Serves 8 to 10.