Create a double boiler using a heat-proof bowl (glass or stainless steel) set over a smaller pot with an inch or two of hot water on the stove on a medium-low heat. Make sure the bottom of the bowl does not touch the water. Melt the chocolate with the cream in the bowl part of the double boiler. If the water starts to steam a lot then remove the pot from the heat so that the water can cool down.

Stir often to mix the melting chocolate with the cream.

When the chocolate is completely melted, slowly whisk in the milk.

When the milk is incorporated you can continue to heat the hot chocolate in the double boiler or you can transfer it to another pot to heat it up a little quicker. If you transfer it make sure you use a medium-low heat and stir it often. It could scorch very quickly. Don't let it come to the boil.

When it starts to steam slightly and is hot enough for your tastes then serve in mugs with lots of marshmallows or whipped cream.