Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
1         lb.           unsalted butter
1         lb.           bittersweet chocolate
8                       eggs (whole)
8                       egg whites
3         cups          powdered sugar
1         cup           all purpose flour
1/2       teaspoon      kosher salt
                        as needed cocoa powder
                        as needed unsalted, softened butter

Preparation:

1) melt chocolate and butter into a double boiler. Set aside and keep warm. 2) using a table top mixer, mix eggs, sugar and salt on medium speed until light in color and very thick (soft peaks) 3) slowly mix in chocolate and butter mixture into egg mixture and blend 4) sprinkle flour evenly over batter and fold 5) before pouring into baking cups or muffin tins, rub inside with softened butter and sprinkle cocoa powder inside 6) place approximately 5 oz. of batter into baking cups or muffin tins 7) bake for 10 minutes at 425 degrees, cakes should have a soft and liquid center