Ingredients:- Flour = 200 gms Cocoa Powder = 40 gms Eggs = 10 eggs Vanilla essence = 1 table-spoon Grain sugar = 240 gms Chocolate cut into square blocks = 300 gms Method:- Beat egg , sugar  and vanilla essence Sift flour , cocoa powder and slowly mix with the wet ingredients Grease tray and pour in half the batter then sprinkle 3/4 of the chunks of chocolate...