Place the crushed chocolate covered espresso beans into a saucer and 2 tablespoons of the coffee liqueur into another saucer. Dip the rims of 4 martini glasses into the coffee liqueur then into the crushed beans.
Combine the coffee, black vodka, coffee liqueur, creme de cocoa and vanilla vodka in a pitcher filled with ice. Stir and immediately pour into the rimmed glasses.