Gather the ingredients
First of all gather all the ingredients together. You should be sure that you have the required amount of every ingredient in front of you.
Add the ingredients to the blender
Add the ingredients to the blender one by one. Pour the ice cream, chocolate syrup and cocoa powder into the blender. You can also add milk but pouring the milk during the blending process is better. Whipped cream can be added to the glass afterwards.
Blend the ingredients until dissolved
Turn the blender to high speed and blend the ingredients until they are well combined. Blend for a few seconds and add a cup of milk to the jug. Repeat the process until all four cups of milk are poured into the blender. You should only stop when the liquid appears a bit foamy or runny. This means that the chocolate shake is ready.
Pour the shake in a glass and serve
Once you have switched off the blender, pour the shake in a tall glass. Place a straw in it and add the whipped cream you had saved for use afterwards. You can also use shredded chocolate on top of the chocolate shake. This will only add to the taste of the drink.