- Pre heat the oven to 180 degrees C. Grease and line a 9 inch baking pan. Mix Maida, cocoa powder, baking soda, baking powder and salt in a bowl. Mix condensed milk, unsalted butter, vanilla extract and whisk for 2 minutes. Add half of the flour mixture and half of the coke in the condensed milk and whisk until combined. Add the remaining flour mixture and coke and whisk well. Pour the batter in the prepared tin. Bake for 25-30 minutes. Remove the pan from the oven. Cool the cake on a wire rack. Cut into pieces and serve.