Coffee panna cotta with Coffee sauce

Start by leaving the coffee pod (without removing the filter) in the milk overnight in a closed container. The next day, remove the pod and bring the milk to a boil with the cream and sugar. Then add the gelatine already soaked in a little water and mix well. Pour into small lightly oiled moulds.
For the sauce, bring the sugar to a boil with 2 tbsp water. Let it boil until it starts to caramel. When it is light brown, add the cream and the butter. Bring it to a boil and add the coffee. Remove from the heat and let it cool. Pour the sauce over the panna cotta and serve.