Fit the lid onto the blender pitcher and hold your hand on the lid to keep it secure while you turn the blender on low. Once it has blended for about 10 seconds, increase the speed to medium-high, or puree and process until smooth.
Pour into a martini glass and use a sifter to dust the top with cocoa powder.
Notes
For a traditional Brandy Ice cocktail simply leave out the mint.This drink can be frozen for up to a month. Blend using an electric blender before serving.