Ganache
In a pan, put the condensed milk and the milk powder, mix well until combined with the heat still off, add the table cream and mix, add the milk, the yolks, the vanilla essence and the butter, turn on the heat at medium temperature and stir until it thickens.
Once it starts to get creamy, you can turn off the heat and stir for another 2 minutes.
Transfer this mixture to a cake tin and cover with plastic film, take it to the freezer for 5 to 6 hours.
Melt the chocolate in the microwave (in 30-second intervals) or use a double boiler, then add the table cream and mix into a ganache.
Pour the ganache syrup over the ice cream.