Heat butter, cocoa powder, drinking chocolate, sugar in the microwave for 1 min. Blend the ingredients well then add eggs one at a time and whisk well. Sift flour and baking powder and swiftly mixing well into egg mixture till a smooth paste is obtained. Insert in a baking pan and bake at 375 F for 15 mins to 20 mins or at 180 C for 15 to 20 mins.
For icing (optional)
Butter 1 1/2 tbsp [heaped]
Cocoa powder 1 tbsp [heaped]
Sugar 4 tbsp [heaped]
Evaporated milk 3 tbsp
Cook on slow flame. Add milk. Cook till a thick glaze is formed. Use glaze as required.