Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      cup           liquid milk
     1/4  teaspoon      vanilla extract
   1      tablespoon    unsweetened cocoa
   1      cup           ice cubes
   2      teaspoons     granulated sugar

Preparation:

Place ingredients in a blender; cover and blend at medium speed 20 seconds, until frothy.