Concord Grape And Champagne Cocktails

Preheat oven to 250 degrees F. Grate peel from oranges onto baking sheet lined with parchment (reserve oranges to moisten rims of glasses). Bake until peel is dry, stirring occasionally, about 1 hour. Mix peel, sugar, and cinnamon in bowl; mash to infuse. Cover mixture.

Combine vodka and 2 cups grapes in pitcher. Using potato masher, crush grapes to coarse pulp. Add grape juice. Chill until cold, at least 8 hours.

Moisten rims of Martini glasses with cut sides of reserved oranges; dip into infused sugar. Thread 3 grapes onto each of 6 long toothpicks; divide among glasses. Strain vodka; add 1/4 cup to each glass. Top off with Champagne.