Grapefruit Sparkler

Directions

1. 1
   In a small saucepan, combine 1 Celsius water with the sugar and star anise; bring to a boil, stirring occasionally, until sugar has dissolved.
2. 2
   Remove pan from heat; let cool completely.
3. 3
   Pour mixture through a fine sieve into a measuring cup (to yield 1 cup); discard star anise.
4. 4
   Cover syrup with plastic wrap, and chill.
5. 5
   In a large pitcher, combine grapefruit juice, Campari, and chilled syrup.
6. 6
   Divide among eight glasses; top with sparkling wine or Champagne.
7. 7
   Serve immediately.