In bowl,add corn flour,cocoa powder,salt,egg,milk and vanilla essence,whisk well until smooth & set aside.

In pot,add milk and sugar,whisk well and bring it to boil.

Turn off the flame,gradually add egg+cocoa powder mixture and whisk continuously.

Turn on the flame,whisk continuously and cook on low flame for 4-5 minutes and whisk continuously until thickens.

Let it cool down.

Decorating with jellies & chocolate chip & chill in refrigerator for 1 hour