This mixer is the perfect hostess gift.
Bring ginger, sugar, and 1/2 cup water to a boil, stirring. Reduce heat; stir until sugar has dissolved. Let cool. Put apricot nectar into a large container; stir in ginger mixture. Refrigerate 2 to 4 hours. Strain; pour into an airtight bottle.
For each drink, pour three ounces of mixer into a glass; add three ounces of sparkling wine. Mixer can be refrigerated up to 1 week.