Sift together refined flour and baking powder. Add cocoa powder and sugar and mix. Break eggs into it.
Add vanilla essence and mix. Add some milk and mix. Add more milk to get the proper consistency.
Add chocolate sauce, butter and grated chocolate and mix.
Heat the waffle maker. Grease with butter and pour a ladleful of batter into it. Close the lid and cook for three to four minutes. Open half way through and glaze with butter.
Serve hot immediately.