Take dark chocolate and chop it

Then take dairy milk and chop it

Now boil water and while boiling keep a container on it

Put chopped chocolates in the container and shake it with a spoon till it melts

Now add 50g room temp whipping cream and shake it with spoon

And remove it now take 250 ml cream and whisk it till it becomes thick

Now add melted chocolate in less amount

And whisk it till it mixis now remove it

Put it in a glass and and keep in freeze for one hour and remove it

Your chocolate mousse is ready