First in a mixture grinder jar add broken parle biscuits and grind them to fine powder.

Take grinded biscuit powder in a bowl, next to add sugar, drinking chocolate powder and mix well.

Now add milk little at a time and mix well till smooth.add chocolate essence and mix.

In last add eno and little milk over it to activate and give it a quick mix.

Immediately pour batter into mugs and keep them in microwave for 1or 1:30 min.

Delicious, quick mug cake is ready.