To make a chocolate milkshake you can use either vanilla or chocolate ice cream. In a blender add a few scoops of ice cream. If you use vanilla ice cream you will need to add chocolate syrup to the ice cream. Then pour in a little milk (about half a cup). Then place the lid on the blender and turn the blender on. If you don’t like the thickness of your milkshake you can add more milk to make it thinner or you can add more ice cream to make it thicker. The same goes for the chocolate syrup if you like it really chocolate then add more syrup to get the flavor that you like.