½ cup water
½ cup sugar
2 star anise, plus extra for garnish
1 cinnamon stick
1 1/2 cup pear nectar
1 750 ml bottle Prosecco, chilled
In a small saucepan over moderate heat, combine ½ cup water, ½ cup sugar, 1 ½ cup pear nectar, star anise, cloves and a cinnamon stick. Bring to a boil, then reduce the heat to low. Simmer for 10 minutes, until syrup thickens. Remove from heat and let steep for 20 minutes to let flavors infuse.
With a sieve, strain pear mixture into a container and discard spices. Let cool to room temperature and refrigerate until chilled.
To make cocktail: fill each glass with ¼ cup pear syrup, top off with prosecco and star anise for garnish.