Cranberry Cocktail Shrub

4 Tbs. orange liqueur, such as Grand Marnier
4 Tbs. cranberry juice
2 Tbs. Cranberry Pear Balsamic Vinegar
12 fresh cranberries
1 bottle Prosecco, cold
Orange peel for garnish

In 4 champagne flutes, evenly spoon in the orange liqueur, cranberry juice and balsamic vinegar mixture. Add 3 of the cranberries to each flute. Fill each flute with the Prosecco. Garnish with orange peel and serve.