Into a thick bottom sauce pan , add chopped chocolates , fresh cream , milk and sugar ( if using).

Turn on the stove , keep on simmer and mix well everything until chocolate melts.

Now let on simmer till it starts to bubble

Again stir once again , you can find it thickening.

Now turn off the stove and add vanilla extract or any other flavors if you wish.

Mix well , pour to your mug top it with marshmallows and serve .