Place all of the ingredients into the blender, including the oil and the non-stick spray.
Use less water for thicker milk shakes and more water for shakes that are easy on the blender motor. The blender should be about 3/4's full.
Place the lid on. Process for a full 2 minutes. Pour into cups and serve.
Variations:.
Add 1 tablespoon of instant coffee for a mocha shake.
Add 1 very ripe banana for a chocolate banana shake.
Add a big spoonful of peanut butter for a decandent Chocolate Peanut Butter Shake.
Add a few broken red and white candy mints for a refreshing Chocolate Mint shake.
To make a vanilla Milk Shake, omit the cocoa powder, reduce the sugar to 1/2 cup and add 1 Tablespoon (yes a full tablespoon) of vanilla flavoring. For a french vanilla milk shake crack in an egg too.
*** Splenda can be used in this recipe. It is measure for measure.