I have used 250ml milk. You can double/triple this recipe according to the number of people. Heat the milk in a saucepan. It is not necessary to bring it to boil.

Measure 50 grams of dark chocolate which is roughly  squares for my bar of dark chocolate which I picked from the grocery store.

As the milk starts heating, add the dark chocolate and a spoonful of cocoa powder and mix well. Also, the sugar.

Heat the milk till the chocolate is melted. Pour in a heat safe glass and put some marshmallows.

You can let the marshmallows sit in the hot chocolate for few minutes so they kind of melt and form a "cloud" over the hot chocolate. Devour!