Peel and core the pumpkin, cut into pieces and cook in a little water until soft. Pour away the cooking water and finely puree the pumpkin. Weigh out 250 g of the pumpkin puree (I recommend using the butternut squash for the drinking chocolate).
Heat the milk together with the pumpkin puree and the spices in a saucepan, but do not let it boil. Remove the saucepan from the heat and add the chocolate, broken into pieces. Stir until the chocolate has melted.
If you don`t mind small pieces of pumpkin in your drinking chocolate, you can enjoy it now. Otherwise, I recommend pouring the drinking chocolate through a sieve so that the remaining, somewhat coarser pieces of pumpkin are filtered out.
Fill the drinking chocolate into cups. If desired, spread the whipped cream on top and dust with a little ground cinnamon.