There are a zillion brownie recipes out there. This one remains my favorite after nearly 40 years. Some of us have unsweetened cocoa powder and powdered sugar that have been sitting in the cupboard for a year or more, and with their age, can give baked goods and frosting a flat, cardboard taste. As with all recipes, the quality of ingredients determines the quality of the finished product. *Make sure to use cocoa powder, NOT hot cocoa mix in this recipe.*