Chocolate Martini      Ingredients: (Serves 2)     3 ounces vodka plus 1 tablespoon vodka or vanilla vodka   1 teaspoon of cacao nibs, finely ground   1 teaspoon turbinado sugar   1 1/2 ounces clear crème de cacao   Directions:     Use a spice or coffee grinder to grind the cocoa nibs. You will have some of the nib and sugar mixture leftover. Try sprinkling it on ice cream or frozen yogurt.       Pour 1 tablespoon vodka onto a small plate or saucer. Stir together the nibs and sugar on another small plate. Dip 2 martini glasses in the vodka to coat the rims and then dip the rims into the nib mixture.     Stir together the remaining 3 ounces vodka and the crème de cacao with ice in a cocktail shaker until cold. Strain into the martini glasses. Serve immediately.