Set a fine-mesh sieve over a small bowl; set aside. In a small saucepan, boil ginger, sugar, and 1/4 cup water until syrupy, about 2 minutes. Pour through sieve into bowl, discarding solids. (To store syrup, refrigerate in an airtight container, up to 1 week.)Advertisement
Pour 1 tablespoon syrup into each of 8 tall glasses. Top with sparkling wine, and gently stir.