In a medium saucepan, add the 2 1/4 cups orange juice, zest strips and cinnamon sticks. Bring mixture to a boil and let it reduce down to about 1 cup; roughly 8 minutes. Strain the mixture and then cool.
In a large pitcher combine the orange reduction with 3 cups orange juice, grapefruit juice and grenadine. Place the pitcher in the fridge to chill for about an hour. Before serving pour in the grapefruit soda, sparkling wine and Grand Marnier. Pour into glasses and garnish orange slices and cinnamon sticks.
Author: Lauren Grier
Course: Cocktail
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