Add 1/2 tsp of baking powder, 1.5 tbsp of cocoa powder, and mix everything well with help of a whisker.

After mixing everything add 3 tbsp of oil, 12 cups of warm milk in batches and mix well, and prepare a smooth batter.
Now add 1/2 tsp of vanilla essence and mix well.
Now put a pan on gas and slightly heat it on low flame.

Now put a pan on gas and slightly heat it on low flame.
Now turn off the gas and take out the pan from gas.
Now take 1 tbsp of batter and add on the pan and spread as thin as possible.
 Now again put the pan on the gas and cook on low flame for 3 minutes.
Now flip it after some time and cook another side for 1 minute.
Now chocolate wafer roll is ready.
Now take any one thing of pencil/skewer/pen and roll chocolate wafer with use of it.
Now remove pencil and let chocolate wafer cool down..