Add the chocolate and butter mixture to the bowl and beat just until combined along with the coffee.
In a large strainer put the flour and the Valrohona or other cocoa powder. Shake the strainer over the bowl of the chocolate mixture, leaving it in a mountain of powder over the wet batter. Add the entire package of Scharffen Berger Baking Chunks on top of the flour and cocoa mixture and fold all of it into the batter with a rubber spatula. This process allows the chocolate chunks to get coated with the dry flour mixture and they won’t sink to the bottom of the pan. Do not use the mixer for this step or the brownies will not be the right texture.
Scrape the brownie batter into the buttered glass pan and bake on the top shelf for 25 minutes.
Let the brownies cool completely before cutting them. They keep best in a tightly sealed glass dish or you can freeze them, individually wrapped in foil.