The tamarind sauce that's prepared as part of this recipe is delicious and can be used for all kinds of dishes, we especially like it with our recipe for duck-fried rice.
Place sugar, red wine, tamarind candy, onion, ginger, and garlic in heavy large saucepan. Bring to boil over medium-high heat, stirring until sugar dissolves and tamarind candy melts. Remove any tamarind seeds. Boil mixture until syrupy, stirring frequently, about 8 minutes. Add chicken broth and 1 cup water; simmer over medium-low heat until thick and syrupy and reduced to 1 1/2 cups, stirring often, about 1 hour. Strain. (can be made one week ahead, cover and refrigerate).