Tasty Bergamot Sparkler is perfect for brunch since it's light and refreshing (and let's face it, pretty to look at).
Make syrup: Simmer sugar, water, and coriander in a medium saucepan until sugar dissolves (4 minutes). Remove from heat; add tea bag. Steep 2 minutes. Strain and cool.
Spoon 2 tsp syrup into each of 6 glasses; top with prosecco.