These cookies are a chocolate lovers dream! When you make these cookies you will know why I have named them the best! To achieve the perfect texture both margarine and butter should be used and the dough has to be chilled for a minimum of 5 hours. These cookies have both flavor and the perfect texture! This will make quite a lot of cookies depending on the size that you make them, I make mine very large so I use about two tablespoons of batter for each cookie. Make certain to sift the cocoa powder first! Yield is only estimated depending on the size of cookies.