- 4 cups seedless red grapes
- 3/4 cup Champagne or sparkling wine
- 1/2 cup sugar
- 1/4 cup frozen Concord grape juice concentrate, thawed
- Few pinches of ground cinnamon
- Additional seedless red grapes (for garnish; optional)
- Puree 4 cups grapes in blender. Combine Champagne, sugar, juice concentrate, 1/4 cup water, and cinnamon in bowl; add 11/2 cups grape puree (reserve any remaining puree for another use). Stir until sugar dissolves.
- Process mixture in ice cream maker according to manufacturer's instructions. Transfer to container. Cover and freeze until firm, at least 4 hours and up to 2 days.
- Serve sorbet in Champagne coupes: garnish with additional grapes, if desired.