Place the hot coffee and the sugar in a measuring cup and stir until the sugar dissolves. Add the milk and pour the mixture into a blender. Add the ice and blend on high speed for 45 to 60 seconds, until the ice cubes have completely dissolved and the mixture is smooth and creamy. Pour into 2 or 3 small glasses, dust lightly with the cocoa powder, and drink ice cold.
Pour water into water reservoir of drip coffee maker. Place coffee filter into top canister and put coffee grinds in. Press "On!"